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IGO LIMITED — Capital/Financing Update 2023
Jul 4, 2023
65111_rns_2023-07-04_b84b4065-b41b-48bb-bddb-887e2481a90a.pdf
Capital/Financing Update
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ASX / MEDIA RELEASE
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5 July 2023
ENCOURAGING LITHIUM RESULTS EXPAND TARGETS AT MT ALEXANDER
HIGHLIGHTS
+120m thick pegmatite at Manta supports wider lithium potential:
-
Assays for MAD213, which was drilled at the Manta Prospect on E29/638 (75% St George; 25% IGO) and intersected a wide zone with multiple pegmatites – including a continuous 120.8m interval – indicate local fractionation of the pegmatites that may represent the distal part of a zoned lithium-bearing system
-
Major structures are interpreted to be associated with the thick flat-lying pegmatites hosted in granite, supporting the potential for the pegmatites to extend into a more favourable host in the greenstone belt, adjacent and intruded by the granite source
-
The thick flat-lying pegmatite at Manta is modelled by seismic data as a strong, 1,000m diameter circular feature, with additional geophysics and drilling planned to test the wider potential for lithium bearing pegmatites around Manta
Extensive mineralised pegmatite field at Jailbreak, open along strike and at depth:
-
Further assay results from the recent 2023 drilling programme at the Jailbreak Prospect confirm multiple lithium-bearing pegmatites with a peak value of 1.28% Li2O
-
Lithium-bearing pegmatites now identified by drilling across a 2km strike of the pegmatite corridor with a further 13km-long part of the corridor that hosts an extensive network of mapped pegmatites yet to be tested by drilling
-
Drilling at Jailbreak has intersected multiple pegmatites that have potential to become thicker at depth, similar to results reported by other explorers in the region[1]
St George Mining Limited (ASX: SGQ ) (“ St George ” or “ the Company ”) is pleased to report further encouraging lithium exploration results at its Mt Alexander Project in Western Australia.
John Prineas, St George Mining’s Executive Chairman said:
“Our understanding of the lithium prospectivity continues to grow at Mt Alexander with recent drill results confirming high-grade and anomalous lithium across a wide area.
“Most encouraging is the very thick 120.8m, flat-lying and locally fractionated zone of pegmatites intersected in hole MAD213 at the Manta Prospect, approximately 9km north of the Jailbreak Lithium Prospect.
“These types of pegmatites are what is required for large mineral deposits and we will continue to test for potential extensions of the Manta pegmatites within and below the adjacent greenstone belt.
1 Delta Lithium Limited (ASX: DLI) – ASX Release dated 12 April 2023 Further Excellent Results from Mt Ida Drilling
ST GEORGE MINING LIMITED ACN 139 308 973 Suite 2, Level 2, 28 Ord Street West Perth WA 6005 |PO Box 100 West Perth WA 6872 www.stgeorgemining.com.au | Phone +61 8 6118 2118
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ASX / MEDIA RELEASE
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“We have only just begun to realise the wider lithium potential at Mt Alexander with the latest drilling confirming the presence of major structures that can produce wide extensional openings for thick fractionated pegmatites to intrude.
“The results for MAD213 confirm that large-scale pegmatite intrusions have occurred and that they are showing signs of prospectivity for lithium. It is now down to identifying the more fractionated lithium-caesium-tantalum (LCT) zone within the pegmatite hosted mineral system.
“We are also encouraged by recent excellent results announced by Delta Lithium at its nearby Mt Ida Project and the confirmation by Hancock Prospecting[2] that it will proceed with a lithium exploration joint venture for Mt Bevan which has ground that wraps around our Mt Alexander tenure.”
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Figure 1 – regional map showing the location of Mt Alexander and other nearby lithium projects.
EARLY INDICATIONS OF LARGE-SCALE PEGMATITE INTRUSION MODEL
MAD213 intersected a 120.8m continuous interval of pegmatite which occurs within a 225m zone comprising multiple pegmatites (the Manta pegmatite zone ); refer to St George ASX Release dated 29 March 2023 120 Metre Pegmatite Intersection at Mt Alexander.
Assays from the pegmatites intersected in MAD213 have provided indications of a wide, multi-phase and locally fractionated pegmatite system which has potential to host lithium mineralisation where the pegmatites are intruded into more prospective host lithologies within the adjacent greenstone sequence at Mt Alexander.
2 Legacy Iron Ore Limited (ASX: LCY) – ASX release dated 15 June 2023 Hancock Executes Lithium Earn-in and Joint Venture
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ASX / MEDIA RELEASE
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The K:Rb (potassium to rubidium) ratio derived from the assays for MAD213 highlights the prospectivity of the Manta pegmatite zone. The ratio is an indicator of a fractionated pegmatite, where the pegmatite melt has evolved as it moves further form its source granite. A K:Rb ratio of less than 150 is a favourable indicator of fractionated pegmatites. The lower the K:Rb ratio, the more fractionated and prospective the pegmatites are interpreted to be.
A favourable K:Rb ratio associated with a Nb:Ta (niobium to tantalum) ratio of less than 5 is a further indication of fractionated pegmatites. A summary of the key geochemical results for MAD213 showing both ratios is included below in Table 1.
| Values | **Lippm ** | **Rbppm ** | **Csppm ** | **Tappm ** | **Snppm ** | **Li20ppm ** | **Nbppm ** | Nb:Ta | K:Rb |
|---|---|---|---|---|---|---|---|---|---|
| Max | 95 | 550 | 5.8 | 6.8 | 49 | 200 | 62 | 1.5^ | 95^ |
| Mean |
14 |
285 |
2.8 |
2 |
5 |
30 |
17 |
9 |
117 |
Table 1 – summary of assay results for pegmatites in MAD213 (^ denotes minimum value). The mean value is based on all 175 samples for MAD213 as reported in Table 4 below.
feature with a diameter of approx. 1,000m – and now confirmed as being due to the pegma�tes intersected within a granite intrusion in MAD213. The current interpreta�on of the reflector is constrained by the extent of the ini�al survey. Further geophysics and drilling are planned to iden�fy the full extent of the Manta pegma�tes and assist in defining where lithium frac�ona�on may occur.
regional-scale structure. Major structures can create wide extensional/dila�onal openings for pegma�tes to intrude and enable frac�ona�on to occur to form large volume lithium deposits. The excep�onal thickness of the Manta pegma�tes and the associa�on with an interpreted regional-scale structure shows some important similari�es with other major lithium deposits in Western Australia.
LCT pegma�tes have already been intersected at Mt Alexander (see our ASX Release dated 29 May 2023 Mt Alexander Exploration Update ), giving further support for the poten�al of the thick pegma�tes intersected at Manta represen�ng a distal part of a larger lithium mineral system.
Figure 2 – image of St George’s tenements highlighting strongly magnetic units and major regional structures (including the craton scale Ida Fault) within the Mt Alexander greenstone belt and less magnetic granite bodies which have intruded the greenstone belt to the east, north and west. The granite intrusions are the interpreted source of the numerous pegmatites (against magnetic RTP 1VD).
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MINERALISED PEGMATITES IDENTIFIED OVER A WIDE AREA AT JAILBREAK
Further assay results have been received for the 2023 drill programme which con�nue to demonstrate the presence of lithium mineralised pegma�tes that commence from or near surface and con�nue to depths of up to 300m below surface. High grades – up to 1.28% Li2O – have been returned in the latest assays, highligh�ng the poten�al of the pegma�te system.
The latest assay results received are shown in Table 2. Together with the assay results reported in our ASX Release dated 29 May 2023 Mt Alexander Exploration Update , these include all the significant and anomalous assay results from the 2023 drilling completed to date. The results have con�nued to build our understanding of the geology and wider poten�al of the lithium-bearing pegma�te system.
2O results, many coincident with anomalous caesium, rubidium and locally tantalum and �n results.
The widespread presence of anomalous lithium at Jailbreak is indica�ve of this area being part of a frac�onated pegma�te system with poten�al for stronger mineralisa�on along strike and down dip from current drilling. As other recent drilling in the region has shown[3] , thick mineralised parts of the system commonly occur at depths of +200m below surface. There is only very limited drilling at this depth so far at Mt Alexander.
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Figure 3 – map of the Jailbreak Prospect showing the location of the latest results of the 2023 drilling.
sequence – an area that lies within the 15km-long pegma�te corridor adjacent to the Copperfield Granite, the interpreted source of the mineralised pegma�tes at the Mt Ida Project of Delta Lithium.
Only 2km of this 15km-long corridor within St George’s tenements has been tested by drilling to date. The southern extension of the corridor, towards the Mt Bevan Project of the Hancock, Hawthorn and Legacy joint venture, con�nues for at least another 1.5km and will be a priority focus of further drilling.
3 Delta Lithium Limited (ASX: DLI) – ASX Release dated 12 April 2023 Further Excellent Results from Mt Ida Drilling.
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In addi�on, the northern extension of the corridor – that includes the recently acquired 100% owned E29/1143 (the bulk of which lies some 6km to the north of Jailbreak) – will be tested by drilling for the first �me. The extensive network of pegma�tes mapped in these areas have yet to be drilled, highligh�ng the explora�on upside of the area.
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Figure 4 - cross section showing drill results and interpreted pegmatites at the Jailbreak Prospect.
BASE METALS INTERCEPTED AT JAILBREAK
Assays for MARD247, which was targe�ng the down-dip extension of the J1 pegma�te at Jailbreak, indicate that – in addi�on to lithium – high-grade zinc was intersected towards the end of that hole.
The stringer sulphide mineralisa�on was observed in quartz veining associated with extensive altera�on halos within a wide zone of sheared mafic host rocks. Highlights include:
- 1.6m @ 3.4% Zn, 0.13% Cu, 0.1% Pb and 3.0 g/t Ag from 485.4m
oincluding 0.45m @ 10.6% Zn, 0.4% Cu, 0.33% Pb and 10.3g/t Ag from 486.55m
High-grade zinc mineralisa�on coupled with elevated copper, lead and silver is typical of certain base metal deposits including VMS-style deposits. No targeted explora�on has ever occurred for this style of deposit at Mt Alexander. The occurrence of high-grade base metal mineralisa�on in MAD247 is significant from an explora�on perspec�ve and warrants further inves�ga�on of the source.
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Figure 5 – MARD247 core tray highlighting the high-grade zinc mineralisation.
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ASX / MEDIA RELEASE
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About the Mt Alexander Project:
The Mt Alexander Project is located 120km south-west of the Agnew-Wiluna Belt, which hosts numerous world-class nickel deposits. The Project comprises seven granted exploration licences – E29/638, E29/548, E29/962, E29/954, E29/972, E29/1041 and E29/1143 – which are a contiguous package. An additional two exploration licences – E29/1093 and E29/1126 – are located to the southeast of the core tenement package.
The Cathedrals, Stricklands, Investigators and Radar nickel-copper-cobalt-PGE discoveries are located on E29/638, which is held in joint venture by St George (75%) and IGO Limited (25%). St George is the Manager of the Project, with IGO retaining a 25% non-contributing interest (in E29/638 only) until there is a decision to mine. The Jailbreak Lithium Prospect is on E29/268 and E29/962. With the exception of E29/638, all Project tenements are owned 100% by St George.
Table 2: Anomalous intercepts in the latest assays results from lithium drilling (>0.2% Li2O).
| Hole ID | Depth From |
Depth To | Interval | Li20_pct | Cs_ppm | Nb_ppm | Rb_ppm | Sn_ppm | Ta_ppm |
|---|---|---|---|---|---|---|---|---|---|
| MARC239A | 118 | 119 | 1 | 0.36 | 563 | 37 | 1918 | 38 | 94 |
| MARC239A | 172 | 175 | 3 | 0.52 | 1134 | 9 | 6334 | 26 | 25 |
| MARC239A | 248 | 250 | 2 | 0.36 | 619 | 15.5 | 6649 | 31 | 25 |
| MARC256 | 38 | 40 | 2 | 0.44 | 545 | 61.5 | 4108 | 40 | 168 |
| MARC256 | 57 | 59 | 2 | 0.82 | 161 | 60 | 4455 | 51.5 | 99.5 |
| Including (57m-58m) | 1 | 1.28 | 251 | 65 | 6869 | 69 | 130 | ||
| MARD245 | 77 | 78 | 1 | 0.21 | 319 | 13 | 2496 | 22 | 34 |
| MARD245 | 80 | 81 | 1 | 0.29 | 43 | 47 | 2738 | 48 | 137 |
| MARD247 | 337.2 | 338 | 0.8 | 0.35 | 174 | 17 | 2749 | 31 | 9 |
| MARD247 | 419.7 | 420.35 | 0.65 | 0.38 | 521 | 10 | 5979 | 25 | 4 |
| MARD247 | 427 | 429 | 2 | 0.33 | 974 | 9.5 | 4609 | 135 | 4 |
| MARD247 | 441 | 442 | 1 | 0.24 | 908 | 8 | 3761 | 19 | 23 |
Table 3: List of 2023 drillholes details pertaining to this report. All holes are in GDA94 -MGA Zone 51.
| Hole ID | Prospect | Tenement | East | North | RL | Depth | Azi | Dip | **Drilltype ** |
|---|---|---|---|---|---|---|---|---|---|
| MARC239A | Jailbreak | E29/962 | 241071 | 6795575 | 462 | 250 | 168 | -60 | RC |
| MARC246 | Jailbreak | E29/962 | 240839 | 6796130 | 460 | 250 | 163 | -60 | RC |
| MARC247 | Jailbreak | E29/962 | 240747 | 6796150 | 462 | 250 | 163 | -60 | RC |
| MARC248 | Jailbreak | E29/962 | 240616 | 6796176 | 467 | 250 | 163 | -60 | RC |
| MARC249 | Jailbreak | E29/962 | 240674 | 6795985 | 465 | 160 | 163 | -60 | RC |
| MARC250 | Jailbreak | E29/638 | 241454 | 6784240 | 461 | 100 | 163 | -60 | RC |
| MARC251 | Jailbreak | E29/638 | 241348 | 6794288 | 455 | 100 | 163 | -60 | RC |
| MARC252 | Jailbreak | E29/638 | 241425 | 6794331 | 460 | 100 | 163 | -60 | RC |
| MARC253 | Jailbreak | E29/638 | 241408 | 6794385 | 454 | 106 | 163 | -60 | RC |
| MARC254 | Jailbreak | E29/638 | 241394 | 6794432 | 459 | 100 | 163 | -60 | RC |
| MARC255 | Jailbreak | E29/638 | 241381 | 6794479 | 459 | 100 | 163 | -60 | RC |
| MARC256 | Jailbreak | E29/638 | 241362 | 6794548 | 459 | 100 | 163 | -60 | RC |
| MARC257 | Jailbreak | E29/638 | 241229 | 6794457 | 459 | 46 | 172 | -60 | RC |
| MARC258 | Jailbreak | E29/638 | 241225 | 6794506 | 462 | 100 | 172 | -60 | RC |
| MARC259 | Jailbreak | E29/638 | 241271 | 6794538 | 461 | 142 | 163 | -60 | RC |
| MARC260 | Jailbreak | E29/638 | 239516 | 6793609 | 490 | 58 | 163 | -60 | RC |
| MAD213 | Manta | E29/638 | 236189 | 6804617 | 424 | 799.2 | 252 | -68 | DD |
| MARD236A | Manta | E29/638 | 236548 | 6803435 | 442 | 472.2 | 247 | -60 | DD |
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| MARD242 | Jailbreak | E29/962 | 240834 | 6795609 | 473 | 395.9 | 163 | -60 | DD |
|---|---|---|---|---|---|---|---|---|---|
| MARD245 | Jailbreak | E29/962 | 240941 | 6795609 | 467 | 400 | 163 | -60 | DD |
| MARD247 | Jailbreak | E29/962 | 240747 | 6796150 | 462 | 525.2 | 163 | -60 | DD |
Table 4: Assays results and sample intervals for all pegmatites sampled from MAD213. Note: (1) the favourable K:Rb and N:Ta ratios are highlighted in Table 4; and (2) the 120.8m continuous interval of pegmatite extends from 631.2m to 752.0m downhole (refer to St George’s ASX Release dated 29 March 2023 which includes photos of drill core with pegmatites from MAD213).
| HOLEID | From | To | Li | Rb | Cs | Ta | K | Nb | K:Rb | Nb:Ta |
|---|---|---|---|---|---|---|---|---|---|---|
| MAD213 | 592.3 | 592.8 | 94 | 280.3 | 4 | 2.5 | 31,900 | 19 | 114 | 8 |
| MAD213 | 592.8 | 593.5 | 20 | 282.1 | 3.1 | 2.6 | 34,700 | 8 | 123 | 3 |
| MAD213 | 593.5 | 594.1 | 14 | 322 | 3.5 | 2.4 | 41,400 | 10 | 129 | 4 |
| MAD213 | 594.1 | 594.6 | 95 | 276 | 3.3 | 2.2 | 33,800 | 12 | 122 | 5 |
| MAD213 | 594.6 | 595.5 | 63 | 332.8 | 4.2 | 2.4 | 37,900 | 20 | 114 | 8 |
| MAD213 | 595.5 | 596.5 | <10 | 509 | 4 | 1.4 | 56,100 | 6 | 110 | 4 |
| MAD213 | 596.5 | 597.5 | <10 | 379.2 | 3.1 | 2.3 | 43,100 | 15 | 114 | 7 |
| MAD213 | 597.5 | 598.5 | 20 | 294.9 | 3.3 | 2.4 | 31,200 | 23 | 106 | 10 |
| MAD213 | 598.5 | 599.5 | <10 | 386.3 | 5.4 | 1.5 | 37,400 | 11 | 97 | 7 |
| MAD213 | 599.5 | 600.5 | <10 | 261 | 4 | 5.2 | 26,200 | 49 | 100 | 9 |
| MAD213 | 600.5 | 601.5 | 11 | 389.1 | 4.9 | 4.3 | 39,200 | 55 | 101 | 13 |
| MAD213 | 601.5 | 601.9 | <10 | 472.5 | 4.8 | 2.8 | 48,400 | 35 | 102 | 13 |
| MAD213 | 601.9 | 602.4 | 89 | 345.4 | 3.9 | 2.3 | 37,800 | 21 | 109 | 9 |
| MAD213 | 611 | 611.5 | 68 | 341.8 | 3.8 | 2.5 | 36,400 | 21 | 106 | 8 |
| MAD213 | 611.5 | 612.5 | <10 | 436.2 | 4.4 | 1 | 48,200 | 10 | 110 | 10 |
| MAD213 | 612.5 | 613.5 | <10 | 201.4 | 4.4 | 2 | 23,900 | 23 | 119 | 12 |
| MAD213 | 613.5 | 614.5 | 10 | 217.5 | 3.6 | 2.4 | 22,400 | 34 | 103 | 14 |
| MAD213 | 614.5 | 615.5 | <10 | 314 | 3.8 | 3.5 | 31,600 | 50 | 101 | 14 |
| MAD213 | 615.5 | 616.5 | 10 | 395.3 | 4 | 3.9 | 41,500 | 57 | 105 | 15 |
| MAD213 | 616.5 | 617.5 | <10 | 325.2 | 3.6 | 3.7 | 35,700 | 56 | 110 | 15 |
| MAD213 | 617.5 | 618.5 | 10 | 206 | 3.8 | 4 | 25,100 | 62 | 122 | 16 |
| MAD213 | 618.5 | 619.5 | <10 | 482.6 | 4.2 | 2.8 | 50,300 | 40 | 104 | 14 |
| MAD213 | 619.5 | 620.5 | <10 | 366.9 | 4.8 | 2.7 | 37,900 | 37 | 103 | 14 |
| MAD213 | 620.5 | 621.3 | <10 | 302.5 | 4.7 | 5.7 | 32,100 | 60 | 106 | 11 |
| MAD213 | 621.3 | 622 | 10 | 549.8 | 5.3 | 2.5 | 56,100 | 22 | 102 | 9 |
| MAD213 | 622 | 623 | <10 | 493.4 | 5.8 | 2.8 | 48,600 | 40 | 99 | 14 |
| MAD213 | 623 | 624 | <10 | 311.6 | 2.9 | 2.5 | 32,800 | 36 | 105 | 14 |
| MAD213 | 624 | 624.5 | 63 | 331.9 | 2.9 | 2.1 | 32,600 | 20 | 98 | 10 |
| MAD213 | 630.5 | 631.2 | 19 | 324.5 | 3.2 | 1.3 | 32,400 | 23 | 100 | 18 |
| MAD213 | 631.2 | 632 | 21 | 339.2 | 5 | 2.9 | 33,900 | 35 | 100 | 12 |
| MAD213 | 632 | 632.6 | <10 | 267.3 | 2.7 | 1.5 | 29,600 | 14 | 111 | 9 |
| MAD213 | 632.6 | 633.5 | <10 | 328 | 3.1 | 1.7 | 39,100 | 8 | 119 | 5 |
| MAD213 | 633.5 | 634.5 | <10 | 209.7 | 2.1 | 1.7 | 27,200 | 6 | 130 | 4 |
| MAD213 | 634.5 | 635 | <10 | 299.9 | 2.2 | 2.5 | 35,500 | 11 | 118 | 4 |
| MAD213 | 635 | 635.9 | <10 | 353.6 | 3.1 | 1.8 | 42,800 | 13 | 121 | 7 |
| MAD213 | 635.9 | 637 | <10 | 367.6 | 3 | 2.7 | 40,700 | 40 | 111 | 15 |
| MAD213 | 637 | 638 | <10 | 321.4 | 2.3 | 1.9 | 35,600 | 19 | 111 | 10 |
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| MAD213 | 638 | 639 | <10 | 264.1 | 2.3 | 1.6 | 30,300 | 19 | 115 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|
| MAD213 | 639 | 640 | <10 | 259.2 | 2.1 | 2.1 | 29,200 | 29 | 113 | 14 |
| MAD213 | 640 | 641 | <10 | 279.5 | 2.4 | 2.4 | 29,800 | 30 | 107 | 13 |
| MAD213 | 641 | 642 | <10 | 207.8 | 1.9 | 1 | 24,900 | 12 | 120 | 12 |
| MAD213 | 642 | 643 | 10 | 324.3 | 4.2 | 0.7 | 37,900 | 10 | 117 | 14 |
| MAD213 | 643 | 644 | 10 | 257.7 | 2.1 | 1.1 | 30,800 | 17 | 120 | 15 |
| MAD213 | 644 | 645 | 11 | 142 | 1.5 | 1.4 | 18,800 | 17 | 132 | 12 |
| MAD213 | 645 | 646 | <10 | 289.1 | 2.5 | 2.5 | 33,500 | 21 | 116 | 8 |
| MAD213 | 646 | 647 | <10 | 307.1 | 2.3 | 2.3 | 37,300 | 21 | 121 | 9 |
| MAD213 | 647 | 648 | <10 | 279.3 | 2.2 | 1.2 | 33,600 | 14 | 120 | 12 |
| MAD213 | 648 | 649 | <10 | 390.3 | 2.6 | 1.3 | 47,900 | 13 | 123 | 10 |
| MAD213 | 649 | 650 | 14 | 427.5 | 2.7 | 6.6 | 51,100 | 10 | 120 | 2 |
| MAD213 | 650 | 651 | 12 | 236.3 | 1.9 | 2.7 | 29,300 | 8 | 124 | 3 |
| MAD213 | 651 | 652 | 12 | 166.2 | 1 | 2.6 | 21,900 | 13 | 132 | 5 |
| MAD213 | 652 | 653 | <10 | 320.7 | 2.1 | 2.9 | 39,400 | 19 | 123 | 7 |
| MAD213 | 653 | 654 | 13 | 263.8 | 1.9 | 2.3 | 34,200 | 12 | 130 | 5 |
| MAD213 | 654 | 655 | 13 | 157.3 | 1.5 | 3.4 | 16,900 | 18 | 107 | 5 |
| MAD213 | 655 | 656 | 14 | 185.3 | 1.6 | 2.9 | 22,800 | 15 | 123 | 5 |
| MAD213 | 656 | 657 | 34 | 345.6 | 2.8 | 2.5 | 39,300 | 15 | 114 | 6 |
| MAD213 | 657 | 658 | 17 | 314.6 | 2.1 | 2.9 | 35,600 | 23 | 113 | 8 |
| MAD213 | 658 | 659 | 14 | 250.6 | 2 | 2 | 29,700 | 18 | 119 | 9 |
| MAD213 | 659 | 660 | 16 | 213.1 | 2.3 | 3.5 | 24,200 | 31 | 114 | 9 |
| MAD213 | 660 | 661 | 10 | 325.3 | 2.8 | 3.3 | 36,700 | 34 | 113 | 10 |
| MAD213 | 661 | 662 | 20 | 214.2 | 1.6 | 1.1 | 25,500 | 10 | 119 | 9 |
| MAD213 | 662 | 663 | 16 | 247.3 | 2.1 | 1.1 | 28,100 | 8 | 114 | 7 |
| MAD213 | 663 | 664 | 14 | 423.8 | 3.2 | 0.8 | 47,900 | 8 | 113 | 10 |
| MAD213 | 664 | 665 | 12 | 180.2 | 1.9 | 1.4 | 20,700 | 13 | 115 | 9 |
| MAD213 | 665 | 666 | <10 | 125.8 | 2.2 | 1.5 | 14,700 | 13 | 117 | 9 |
| MAD213 | 666 | 667 | 15 | 356.7 | 3.2 | 1.1 | 38,500 | 11 | 108 | 10 |
| MAD213 | 667 | 668 | 11 | 322.3 | 2.6 | 0.9 | 37,000 | 12 | 115 | 13 |
| MAD213 | 668 | 669 | 15 | 351.5 | 2.6 | 1 | 41,800 | 9 | 119 | 9 |
| MAD213 | 669 | 670 | 12 | 385.7 | 3.1 | 1.2 | 43,000 | 10 | 111 | 8 |
| MAD213 | 670 | 671 | <10 | 231.6 | 2.1 | 1.3 | 28,300 | 12 | 122 | 9 |
| MAD213 | 671 | 671.9 | 20 | 232.7 | 2.1 | 1 | 30,700 | 8 | 132 | 8 |
| MAD213 | 671.9 | 672.8 | 94 | 223.6 | 1.7 | 2.9 | 55,800 | 61 | 250 | 21 |
| MAD213 | 672.8 | 673.4 | <10 | 277.6 | 2 | 0.5 | 35,200 | 6 | 127 | 12 |
| MAD213 | 673.4 | 674 | 11 | 397.1 | 3.1 | 0.6 | 49,400 | 5 | 124 | 8 |
| MAD213 | 674 | 675 | 11 | 357.1 | 2.5 | 0.5 | 41,700 | 5 | 117 | 10 |
| MAD213 | 675 | 676 | 16 | 419.2 | 3 | 1.6 | 48,100 | 19 | 115 | 12 |
| MAD213 | 676 | 677 | 14 | 142.3 | 1.6 | 1.3 | 17,000 | 13 | 119 | 10 |
| MAD213 | 677 | 678 | 16 | 312.4 | 3.7 | 4.8 | 35,100 | 35 | 112 | 7 |
| MAD213 | 678 | 679 | 17 | 229.2 | 2.1 | 1.5 | 28,400 | 10 | 124 | 7 |
| MAD213 | 679 | 680 | 19 | 170.7 | 2.2 | 1.1 | 20,900 | 10 | 122 | 9 |
| MAD213 | 680 | 681 | 15 | 299.6 | 3.3 | 1.7 | 36,200 | 19 | 121 | 11 |
| MAD213 | 681 | 682 | 25 | 334.9 | 2.4 | 1.3 | 38,300 | 8 | 114 | 6 |
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| MAD213 | 682 | 683 | 17 | 250.9 | 2.2 | 1.9 | 29,200 | 21 | 116 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|
| MAD213 | 683 | 684 | 14 | 257.6 | 2.7 | 2.2 | 29,500 | 27 | 115 | 12 |
| MAD213 | 684 | 685 | 12 | 247.2 | 3.2 | 3.1 | 27,800 | 36 | 112 | 12 |
| MAD213 | 685 | 686 | <10 | 156.8 | 1.7 | 1 | 18,000 | 13 | 115 | 13 |
| MAD213 | 686 | 687 | 13 | 250.6 | 2.4 | 0.7 | 29,900 | 7 | 119 | 10 |
| MAD213 | 687 | 688 | 13 | 246.2 | 1.9 | 1 | 29,900 | 9 | 121 | 9 |
| MAD213 | 688 | 689 | 14 | 388.9 | 3.1 | 0.8 | 44,200 | 6 | 114 | 8 |
| MAD213 | 689 | 690 | 14 | 498.4 | 3 | 0.7 | 56,400 | 6 | 113 | 9 |
| MAD213 | 690 | 691 | 11 | 158.8 | 1.8 | 1.4 | 20,000 | 13 | 126 | 9 |
| MAD213 | 691 | 692 | 11 | 212.5 | 2 | 1.1 | 25,000 | 11 | 118 | 10 |
| MAD213 | 692 | 693 | 12 | 364.6 | 2.8 | 1.2 | 42,200 | 15 | 116 | 13 |
| MAD213 | 693 | 694 | 10 | 351.5 | 2.5 | 0.6 | 39,400 | 8 | 112 | 13 |
| MAD213 | 694 | 695 | 13 | 280.6 | 2.8 | 1.3 | 34,100 | 16 | 122 | 12 |
| MAD213 | 695 | 696 | 14 | 345.8 | 2.2 | 2.5 | 42,500 | 20 | 123 | 8 |
| MAD213 | 696 | 697 | 18 | 338.5 | 2.7 | 5.5 | 39,500 | 12 | 117 | 2 |
| MAD213 | 697 | 698 | <10 | 222.6 | 3.2 | 2.8 | 26,200 | 21 | 118 | 8 |
| MAD213 | 698 | 699 | <10 | 249.8 | 2.4 | 1.5 | 31,200 | 13 | 125 | 9 |
| MAD213 | 699 | 700 | 17 | 392.4 | 3.1 | 1.3 | 44,500 | 10 | 113 | 8 |
| MAD213 | 700 | 701 | 14 | 136.5 | 2.1 | 2.1 | 17,600 | 22 | 129 | 10 |
| MAD213 | 701 | 702 | 11 | 305.6 | 2.7 | 1.3 | 36,200 | 13 | 118 | 10 |
| MAD213 | 702 | 703 | 15 | 286.5 | 2.2 | 1.2 | 34,000 | 8 | 119 | 7 |
| MAD213 | 703 | 703.8 | 13 | 109.6 | 1.1 | 1.2 | 14,100 | 8 | 129 | 7 |
| MAD213 | 703.8 | 705 | 13 | 99.1 | 1.2 | 1.1 | 14,000 | 8 | 141 | 7 |
| MAD213 | 705 | 706 | <10 | 144.8 | 1.3 | 1.1 | 17,800 | 10 | 123 | 9 |
| MAD213 | 706 | 707 | 15 | 254 | 2.2 | 3.7 | 27,100 | 8 | 107 | 2 |
| MAD213 | 707 | 708 | 15 | 206 | 3.1 | 4.4 | 23,800 | 22 | 116 | 5 |
| MAD213 | 708 | 709 | 26 | 131.1 | 1.6 | 3.4 | 15,900 | 27 | 121 | 8 |
| MAD213 | 709 | 710 | 14 | 284.6 | 2.3 | 1.6 | 35,000 | 9 | 123 | 6 |
| MAD213 | 710 | 711 | 12 | 295.2 | 2.5 | 1.4 | 34,300 | 9 | 116 | 6 |
| MAD213 | 711 | 712 | 12 | 128 | 1.7 | 1.1 | 15,900 | 7 | 124 | 6 |
| MAD213 | 712 | 713 | 14 | 215.7 | 2.4 | 1.5 | 25,900 | 11 | 120 | 7 |
| MAD213 | 713 | 714 | 12 | 198.4 | 2.3 | 2.7 | 23,200 | 22 | 117 | 8 |
| MAD213 | 714 | 715 | 11 | 94.9 | 1.9 | 2.2 | 13,200 | 15 | 139 | 7 |
| MAD213 | 715 | 716 | 11 | 265.3 | 2.6 | 1.9 | 32,400 | 14 | 122 | 7 |
| MAD213 | 716 | 717 | 12 | 376 | 3.4 | 1.3 | 44,200 | 11 | 118 | 8 |
| MAD213 | 717 | 718 | 12 | 446.9 | 3.6 | 0.7 | 53,100 | 5 | 119 | 7 |
| MAD213 | 718 | 719 | 23 | 242.4 | 2.2 | 1.3 | 27,600 | 11 | 114 | 8 |
| MAD213 | 719 | 720 | 20 | 327.8 | 2.7 | 0.9 | 37,000 | 6 | 113 | 7 |
| MAD213 | 720 | 721 | 16 | 275.2 | 3.2 | 1 | 29,800 | 6 | 108 | 6 |
| MAD213 | 721 | 722 | 15 | 449.6 | 4.3 | 1.5 | 49,900 | 12 | 111 | 8 |
| MAD213 | 722 | 723 | 12 | 328.8 | 3.6 | 2.7 | 38,800 | 17 | 118 | 6 |
| MAD213 | 723 | 724 | 11 | 221.1 | 2 | 0.7 | 25,800 | 5 | 117 | 7 |
| MAD213 | 724 | 725 | 15 | 275.5 | 5.5 | 1.1 | 30,700 | 9 | 111 | 8 |
| MAD213 | 725 | 726 | 17 | 311.3 | 3.4 | 0.6 | 33,900 | 5 | 109 | 8 |
| MAD213 | 726 | 727 | 19 | 278.4 | 3.5 | 0.9 | 30,500 | 7 | 110 | 8 |
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==> picture [119 x 55] intentionally omitted <==
| MAD213 | 727 | 728 | 16 | 434.8 | 3.1 | 0.6 | 49,300 | 5 | 113 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|
| MAD213 | 728 | 729 | 18 | 220.1 | 3.7 | 2.1 | 24,500 | 21 | 111 | 10 |
| MAD213 | 729 | 730 | 17 | 369.8 | 5.4 | 2.9 | 41,300 | 26 | 112 | 9 |
| MAD213 | 730 | 731 | 18 | 215.6 | 4 | 0.7 | 24,100 | 6 | 112 | 9 |
| MAD213 | 731 | 732 | 14 | 303.6 | 3.5 | 0.6 | 33,700 | 5 | 111 | 8 |
| MAD213 | 732 | 733 | 18 | 280.7 | 3.8 | 5.1 | 30,600 | 28 | 109 | 5 |
| MAD213 | 733 | 734 | 20 | 331.2 | 4 | 1.1 | 38,600 | 8 | 117 | 7 |
| MAD213 | 734 | 735 | 20 | 296.9 | 3.7 | 1.5 | 34,300 | 20 | 116 | 13 |
| MAD213 | 735 | 736 | 14 | 330 | 2.9 | 3.6 | 39,500 | 35 | 120 | 10 |
| MAD213 | 736 | 737 | 17 | 197.1 | 1.9 | 1 | 24,500 | 12 | 124 | 12 |
| MAD213 | 737 | 738 | 20 | 198.6 | 2.3 | 0.8 | 23,500 | 11 | 118 | 14 |
| MAD213 | 738 | 739 | 17 | 204.9 | 2.6 | 0.9 | 24,300 | 9 | 119 | 10 |
| MAD213 | 739 | 740 | 20 | 264.2 | 3.8 | 1.5 | 29,200 | 14 | 111 | 9 |
| MAD213 | 740 | 741 | 18 | 343 | 3.5 | 0.5 | 41,700 | 6 | 122 | 12 |
| MAD213 | 741 | 742 | 16 | 301.7 | 3.2 | 1.1 | 36,000 | 11 | 119 | 10 |
| MAD213 | 742 | 743 | 12 | 195.9 | 2.3 | 2.3 | 24,500 | 21 | 125 | 9 |
| MAD213 | 743 | 744 | 16 | 327.4 | 3.5 | 1.8 | 38,600 | 12 | 118 | 7 |
| MAD213 | 744 | 745 | 19 | 252.7 | 2.5 | 6.8 | 29,600 | 17 | 117 | 3 |
| MAD213 | 745 | 746 | 24 | 142.6 | 1.9 | 3 | 17,200 | 12 | 121 | 4 |
| MAD213 | 746 | 747 | 14 | 172.8 | 2.8 | 1.9 | 19,900 | 8 | 115 | 4 |
| MAD213 | 747 | 748 | 16 | 180.5 | 3.3 | 3 | 21,200 | 20 | 117 | 7 |
| MAD213 | 748 | 749 | 17 | 138 | 2.6 | 1.7 | 16,800 | 10 | 122 | 6 |
| MAD213 | 749 | 750 | 18 | 296.6 | 3.4 | 1.4 | 35,000 | 10 | 118 | 7 |
| MAD213 | 750 | 751 | 13 | 225.8 | 2.5 | 1.2 | 27,000 | 10 | 120 | 8 |
| MAD213 | 751 | 752 | 18 | 194.6 | 2.3 | 1.1 | 24,500 | 9 | 126 | 8 |
| MAD213 | 752 | 753 | 86 | 274.3 | 2.5 | 2.1 | 33,500 | 31 | 122 | 15 |
| MAD213 | 753 | 754 | 12 | 233.9 | 2.2 | 0.9 | 28,900 | 7 | 124 | 8 |
| MAD213 | 754 | 755 | 12 | 238.9 | 2.2 | 1.2 | 30,700 | 10 | 129 | 8 |
| MAD213 | 755 | 756 | <10 | 266.5 | 2.4 | 1 | 33,100 | 8 | 124 | 8 |
| MAD213 | 756 | 757 | 10 | 228.3 | 1.9 | 0.9 | 28,500 | 8 | 125 | 9 |
| MAD213 | 757 | 758 | 12 | 232.4 | 2.6 | 5.3 | 25,900 | 49 | 111 | 9 |
| MAD213 | 758 | 759 | 70 | 291.3 | 2.7 | 2.4 | 34,300 | 21 | 118 | 9 |
| MAD213 | 759 | 760 | 78 | 274.8 | 2.3 | 2.4 | 29,700 | 16 | 108 | 7 |
| MAD213 | 765 | 766 | 81 | 269.6 | 2.4 | 1.9 | 30,800 | 21 | 114 | 11 |
| MAD213 | 766 | 766.5 | 89 | 261.7 | 3.2 | 1.7 | 28,300 | 21 | 108 | 12 |
| MAD213 | 766.5 | 767 | <10 | 327.1 | 2.4 | 0.8 | 42,600 | 10 | 130 | 13 |
| MAD213 | 767 | 768 | <10 | 353.6 | 2.7 | 1 | 43,100 | 10 | 122 | 10 |
| MAD213 | 768 | 769 | <10 | 166.3 | 1.4 | 0.9 | 21,800 | 9 | 131 | 10 |
| MAD213 | 769 | 770 | <10 | 225.1 | 2 | 0.9 | 26,500 | 10 | 118 | 11 |
| MAD213 | 770 | 770.9 | <10 | 351.4 | 2.5 | 1.3 | 44,600 | 11 | 127 | 8 |
| MAD213 | 770.9 | 771.4 | 64 | 224 | 1.6 | 0.7 | 28,500 | 12 | 127 | 17 |
| MAD213 | 771.4 | 772 | 10 | 240 | 1.7 | 0.4 | 31,600 | 6 | 132 | 15 |
| MAD213 | 772 | 773 | 11 | 365 | 2.4 | 0.4 | 47,700 | 5 | 131 | 13 |
| MAD213 | 773 | 774 | 12 | 328.8 | 2.5 | 0.8 | 40,200 | 10 | 122 | 13 |
| MAD213 | 774 | 775 | 12 | 355 | 2.5 | 0.3 | 45,100 | 4 | 127 | 13 |
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| MAD213 | 775 | 776 | 11 | 383.3 | 2.7 | 0.5 | 49,900 | 4 | 130 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|
| MAD213 | 776 | 777 | 11 | 393.6 | 2.6 | 0.8 | 51,600 | 7 | 131 | 9 |
| MAD213 | 777 | 778 | 79 | 261.2 | 2 | 1.4 | 31,900 | 17 | 122 | 12 |
Authorised for release by the Board of St George Mining Limited.
For further information, please contact: John Prineas Peter Klinger Executive Chairman Media and Investor Relations St George Mining Limited Cannings Purple +61 411 421 253 +61 411 251 540 [email protected] [email protected]
Competent Person Statement:
The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves for the Mt Alexander Project is based on information compiled by Mr Dave Mahon, a Competent Person who is a Member of The Australasian Institute of Geoscientists. Mr Mahon is employed by St George Mining Limited to provide technical advice on mineral projects, and he holds performance rights issued by the Company.
Mr Mahon has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Mahon consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
Forward Looking Statements:
This announcement includes forward-looking statements that are only predictions and are subject to known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of St George, the directors and the Company’s management. Such forward-looking statements are not guarantees of future performance.
Examples of forward-looking statements used in this announcement include use of the words ‘may’, ‘could’, ‘believes’, ‘estimates’, ‘targets’, ‘expects’, or ‘intends’ and other similar words that involve risks and uncertainties. These statements are based on an assessment of present economic and operating conditions, and on a number of assumptions regarding future events and actions that, as at the date of announcement, are expected to take place.
Actual values, results, interpretations or events may be materially different to those expressed or implied in this announcement. Given these uncertainties, recipients are cautioned not to place reliance on forward-looking statements in the announcement as they speak only at the date of issue of this announcement. Subject to any continuing obligations under applicable law and the ASX Listing Rules, St George does not undertake any obligation to update or revise any information or any of the forward-looking statements in this announcement or any changes in events, conditions or circumstances on which any such forward-looking statement is based.
This announcement has been prepared by St George Mining Limited. The document contains background Information about St George Mining Limited current at the date of this announcement.
The announcement is in summary form and does not purport to be all inclusive or complete. Recipients should not rely upon it as advice for investment purposes, as it does not take into account your investment objectives, financial position or needs. These factors should be considered, with or without professional advice, when deciding if an investment is appropriate.
The announcement is for information purposes only. Neither this announcement nor the information contained in it constitutes an offer, invitation, solicitation or recommendation in relation to the purchase or sale of shares
11
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==> picture [119 x 55] intentionally omitted <==
in any jurisdiction. The announcement may not be distributed in any jurisdiction except in accordance with the legal requirements applicable in such jurisdiction. Recipients should inform themselves of the restrictions that apply to their own jurisdiction as a failure to do so may result in a violation of securities laws in such jurisdiction.
This announcement does not constitute investment advice and has been prepared without taking into account the recipient’s investment objectives, financial circumstances or particular needs and the opinions and recommendations in this announcement are not intended to represent recommendations of particular investments to particular persons.
Recipients should seek professional advice when deciding if an investment is appropriate. All securities transactions involve risks, which include (among others) the risk of adverse or unanticipated market, financial or political developments. To the extent permitted by law, no responsibility for any loss arising in any way (including by way of negligence) from anyone acting or refraining from acting as a result of this material is accepted by St George Mining Limited (including any of its related bodies corporate), its officers, employees, agents and advisers .
12
The following section is provided for compliance with requirements for the reporting of exploration results under the JORC Code, 2012 Edition.
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections)
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sampling | Nature and quality of sampling (eg cut channels, | RC Sampling: All samples from the RC drilling are taken as 1m samples |
| techniques | random chips, or specific specialised industry | split using a cone splitter and collected in a calico bag for laboratory |
| standard measurement tools appropriate to the | assay. | |
| minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. |
_Diamond Core Sampling:_The sections of the core that are selected for assaying are marked up and then recorded on a sample sheet for cutting and sampling at the certified assay laboratory. Samples of HQ or NQ2 core are cut just to the right of the orientation line where |
|
| available using a diamond core saw, with half core sampled | ||
| lengthways for assay. | ||
| Include reference to measures taken to ensure | _RC Sampling:_Samples are taken on a one metre basis and collected | |
| sample representivity and the appropriate | using uniquely numbered calico bags. The remaining material for that | |
| calibration of any measurement tools or | metre is collected and stored in a green plastic bag marked with that | |
| systems used. | specific metre interval. The cyclone is cleaned with compressed air | |
| after each plastic and calico sample bag is removed. If wet sample or | ||
| clays are encountered then the cyclone is opened and cleaned | ||
| manually and with the aid of a compressed air gun. A blank sample is | ||
| inserted at the beginning of each hole, and a duplicate sample is | ||
| taken every 50thsample. A certified sample standard is also added | ||
| according to geology, but at no more than 1:50 samples. | ||
| Geological logging of RC chips is completed at site with | ||
| representative chips being stored in drill chip trays. Downhole | ||
| surveys of dip and azimuth are conducted using a single shot camera | ||
| every 30m, and using a downhole Gyro when required, to detect | ||
| deviations of the hole from the planned dip and azimuth. The drill- | ||
| hole collar locations are recorded using a hand-held GPS, which has | ||
| an accuracy of +/- 5m. All drill-hole collars will be surveyed to a | ||
| greater degree of accuracy using a certified surveyor at a later date. | ||
| _Diamond Core Sampling:_For diamond core samples, certified sample | ||
| standards were added as every 50thsample. Core recovery | ||
| calculations are made through a reconciliation of the actual core and | ||
| the driller’s records. Downhole surveys of dip and azimuth were | ||
| conducted using a single shot camera every 30m to detect deviations | ||
| of the hole from the planned dip and azimuth. The drill-hole collar | ||
| locations are recorded using a hand-held GPS, which has an accuracy | ||
| of +/- 5m. |
1
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Aspects of the determination of mineralisation | _RC Sampling:_A 1m composite sample is taken from the bulk sample | |
| that are Material to the Public Report. | of RC chips that may weigh in excess of 40 kg. Each sample collected | |
| In cases where ‘industry standard’ work has been done this would be relatively simple (eg |
for assay typically weighs 2-3kg, and once dried, is prepared for the laboratory as per the Diamond samples below. |
|
| ‘reverse circulation drilling was used to obtain 1 | _Diamond Core Sampling:_Diamond core (both HQ and NQ2) is half- | |
| m samples from which 3 kg was pulverised to | core sampled to geological boundaries no more than 1.5m and no less | |
| produce a 30 g charge for fire assay’). In other | than 10cm. Samples less than 3kg are crushed to 10mm, dried and | |
| cases more explanation may be required, such | then pulverised to 75µm. Samples greater than 3kg are first crushed | |
| as where there is coarse gold that has inherent | to 10mm then finely crushed to 3mm and input into the rotary | |
| sampling problems. Unusual commodities or | splitters to produce a consistent output weight for pulverisation. | |
| mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. |
Elements for allLithiumtargeted sample mediums are analysed using a peroxide fusion digest and an ICP finish. These elements are: Li, Al, |
|
| As, B, Ba, Be, Ca, Cs, Fe, Hf, Ga, K, Mg, Mn, Nb, P, Rb, S, Si, Sn, Sr, Ta, | ||
| W, and Zr. The sample is digested with, hydrochloric, acid to effect a | ||
| total dissolution of the sample. The sample is then analysed using ICP- | ||
| AES or ICP-MS. | ||
| Elements for allbase metalssuites go through the following two | ||
| analytical methods: | ||
| Pulverisation produces a 40g charge for fire assay. Elements | ||
| determined from fire assay are gold (Au), platinum (Pt) and palladium | ||
| (Pd) with a 1ppb detection limit. To determine other PGE | ||
| concentrations (Rh, Ru, Os, Ir) a 25g charge for nickel sulphide collect | ||
| fire assay is used with a 1ppb detection limit. | ||
| Other elements will be analysed using an acid digest and an ICP finish. | ||
| These elements are: Ag, Al, As, Bi, Ca, Cd, Co, Cr, Fe, K, Li, Mg, Mn, | ||
| Mo, Nb, Ni, P, Pb, S, Sb, Sn, Te, Ti, V, W, Zn. The sample is digested | ||
| with nitric, hydrochloric, hydrofluoric and perchloric acids to effect as | ||
| near to total solubility of the sample as possible. The sample is then | ||
| analysed using ICP-AES or ICP-MS. | ||
| Drilling | Drill type (eg core, reverse circulation, open-hole | _Diamond Core Sampling:_The collars of the diamond holes were |
| techniques | hammer, rotary air blast, auger, Bangka, sonic, | drilled using RC drilling down through the regolith to the point of |
| etc) and details (eg core diametre, triple or | refusal or to a level considered geologically significant to change to | |
| standard tube, depth of diamond tails, face- | core. The hole was then continued using HQ diamond core until the | |
| sampling bit or other type, whether core is | drillers determined that a change to NQ2 coring was required. | |
| oriented and if so, by what method, etc). | The core is oriented and marked by the drillers. The core is oriented | |
| using ACT Mk II electric core orientation. | ||
| _RC Sampling:_The RC drilling uses a 140 mm diameter face hammer | ||
| tool. High capacity air compressors on the drill rig are used to ensure | ||
| a continuously sealed and high-pressure system during drilling to | ||
| maximise the recovery of the drill cuttings, and to ensure chips | ||
| remain dry to the maximum extent possible. | ||
| Drill sample | Method of recording and assessing core and | _RC Sampling:_RC samples are visually checked for recovery, moisture |
| recovery | chip sample recoveries and results assessed. | and contamination. Geological logging is completed at site with |
| representative RC chips stored in chip trays. | ||
| _Diamond Core Sampling:_Diamond core recoveries are recorded | ||
| during drilling and reconciled during the core processing and | ||
| geological logging. The core length recovered is measured for each | ||
| run and recorded which is used to calculate core recovery as a | ||
| percentage. | ||
| Measures taken to maximise sample recovery | ||
| and ensure representative nature of the | _RC Sampling:_Samples are collected using cone or riffle splitter. | |
| samples. | Geological logging of RC chips is completed at site with representative | |
| chips being stored in drill chip trays. |
2
| Criteria | JORC Code explanation Commentary |
|---|---|
| _Diamond Core Sampling:_Measures taken to maximise core recovery include using appropriate core diameter and shorter barrel length through the weathered zone, Primary locations for core loss in fresh rock are on geological contacts and structural zones, and drill techniques are adjusted accordingly, and if possible, these zones are predicted from the geological modelling. |
|
| Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. To date, no sample recovery issues have yet been identified that would impact on potential sample bias in the soil profile or sampling methods. |
|
| Logging | Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. Each sample is recorded for the lithology, type and nature of the soil. The surface topography and type is recorded at the sample location. Logging of samples records lithology, mineralogy, mineralisation, structures (core only), weathering, colour and other noticeable features. Chips and core was photographed in both dry and wet form. |
| Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The logging is both qualitive and quantitative in nature, with sample recovery and volume being recorded, |
|
| The total length and percentage of the relevant intersections logged. All drill holes are geologically logged in full and detailed litho- geochemical information is collected by the field XRF unit. The data relating to the elements analysed is used to determine further information regarding the detailed rock composition. |
|
| Sub-sampling techniques and sample preparation |
If core, whether cut or sawn and whether quarter, half or all core taken. _Diamond Core Sampling:_Diamond core was drilled with HQ and NQ2 size and sampled as complete half core to produce a bulk sample for analysis. Intervals selected varied from 0.3 – 1m (maximum) The HQ and NQ2 core is cut in half length ways just to the right of the orientation line where available using a diamond core saw. All samples are collected from the same side of the core where practicable. Assay preparation procedures ensure the entire sample is pulverised to 75 microns before the sub-sample is taken. This removes the potential for the significant sub-sampling bias that can be introduced at this stage. |
| If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. RC samples are collected in dry form. Samples are collected using cone or riffle splitter when available. Geological logging of RC chips is completed at site with representative chips being stored in drill chip trays. |
|
| For all sample types, the nature, quality and appropriateness of the sample preparation technique. RC Sampling: Sample preparation for RC chips follows a standard protocol. The entire sample is pulverised to 75µm using LM5 pulverising mills. Samples are dried, crushed and pulverized to produce a homogenous representative sub-sample for analysis. A grind quality target of 90% passing 75µm is used. |
3
| Criteria | JORC Code explanation Commentary |
|---|---|
| Quality control procedures adopted for all sub- sampling stages to maximise representivity of samples. Quality control procedures include submission of Certified Reference Materials (standards), duplicates and blanks with each sample batch. QAQC results are routinely reviewed to identify and resolve any issues_. _RC Sampling: Field QC procedures maximise representivity of RC samples and involve the use of certified reference material as assay standards, along with blanks, duplicates and barren washes. _Diamond Core Sampling:_Drill core is cut in half lengthways and the total half-core submitted as the sample. This meets industry standards where 50% of the total sample taken from the diamond core is submitted. |
|
| Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling. Duplicate samples are selected during sampling. Samples comprise two quarter core samples for Diamond Core. Duplicate RC samples are captured using two separate sampling apertures on the splitter. |
|
| Whether sample sizes are appropriate to the grain size of the material being sampled. The sample sizes are considered to be appropriate to correctly represent base metal sulphide mineralisation and associated geology based on: the style of mineralisation (massive and disseminated sulphides), the thickness and consistency of the intersections and the sampling methodology. |
|
| Quality of assay data and laboratory tests |
The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. The assay method and detection limits are appropriate for analysis of the elements required. |
| For geophysical tools, spectrometres, handheld XRF instruments, etc, the parametres used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. A handheld XRF instrument (Olympus Innov-X Spectrum Analyser) is used to provide an initial assay of the geochemical sample onsite. One reading is taken per sample. The instruments are serviced and calibrated at least once a year. Field calibration of the XRF instrument using standards is periodically performed (usually daily). The handheld XRF results are only used for preliminary assessment and not for reporting of element compositions, prior to the receipt of assay results from the certified laboratory. |
|
| Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. Laboratory QAQC involves the use of internal lab standards using certified reference material (CRMs), blanks and pulp duplicates as part of in-house procedures. The Company also submits a suite of CRMs, blanks and selects appropriate samples for duplicates. Sample preparation checks for fineness are performed by the laboratory to ensure the grind size of 90% passing 75µm is being attained. |
|
| Verification of sampling and assaying |
The verification of significant intersections by either independent or alternative company personnel. Significant intersections and assays are verified by the Company’s Technical Director and Consulting Field Geologist. |
| The use of twinned holes. No twinned holes have been planned for the current drill programme. |
|
| Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Primary data is captured onto a laptop using acQuire software and includes geological logging, sample data and QA/QC information. This data, together with the assay data, is entered into the St George Mining central SQL database which is managed by external consultants. |
|
| Discuss any adjustment to assay data. No adjustments or calibrations will be made to any primary assay data collected for the purpose of reporting assay grades and mineralised intervals. For the geological analysis, standards and recognised |
4
| Criteria | JORC Code explanation Commentary |
|---|---|
| factors may be used to calculate the oxide from assayed elements, or to calculate volatile free mineral levels in rocks. |
|
| Location of data points |
Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. The sample locations are determined by using a handheld GPS system with an expected accuracy of +/-5m for easting, northing and elevation. This is considered adequate for the type and purpose of the surveys. |
| Specification of the grid system used. The grid system used is GDA94, MGA Zone 51. |
|
| Quality and adequacy of topographic control. Elevation data has been acquired using handheld GPS surveying at specific location across the project, including drill collars, and entered into the central database. A topographic surface has been created using this elevation data. |
|
| Data spacing and distribution |
Data spacing for reporting of Exploration Results. The spacing and distribution of holes is not relevant to the drilling programs which are at the exploration stage rather than definition drilling. |
| Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. The completed drilling at the Project is not sufficient to establish the degree of geological and grade continuity to support the definition of Mineral Resource and Reserves and the classifications applied under the 2012 JORC code. |
|
| Whether sample compositing has been applied. No compositing has been applied to the exploration results. |
|
| Orientation of data in relation to geological structure |
Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. The drill holes are drilled to intersect the modelled mineralised zones at a near perpendicular orientation (unless otherwise stated). However, the orientation of key structures may be locally variable and any relationship to mineralisation has yet to be identified. |
| If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. No orientation based sampling bias has been identified in the data to date. |
|
| Sample security |
The measures taken to ensure sample security. Chain of Custody is managed by the Company until samples pass to a duly certified assay laboratory for subsampling and assaying. The sample bags are stored on secure sites and delivered to the assay laboratory by the Company or a competent agent. When in transit, they are kept in locked premises. Transport logs have been set up to track the progress of samples. The chain of custody passes upon delivery of the samples to the assay laboratory. |
| Audits or reviews |
The results of any audits or reviews of sampling techniques and data. Sampling techniques and procedures are regularly reviewed internally, as is the data. |
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Section 2 Reporting of Exploration Results (Criteria listed in section 1 will also apply to this section where relevant)
| Criteria | JORC Code explanation | Commentary | |
|---|---|---|---|
| Mineral | Type, name/reference number, location and | The Mt Alexander Project is comprised of six granted Exploration | |
| Tenement and | ownership including agreements or | material | Licences (E29/638, E29/548, E29/954, E29/962, E29/972 and |
| Land Status | issues with third parties including joint | ventures, | E29/1041). Tenement E29/638 is held in Joint Venture between St |
| partnerships, overriding royalties, native title | George (75% interest) and IGO (25% interest). E29/638 and E29/548 | ||
| interests, historical sites, wilderness or national | are also subject to a royalty in favour of a third party that is outlined | ||
| park and environmental settings. | in the ASX Release dated 17 December 2015 (as regards E29/638) and | ||
| the ASX release dated 18 September 2015 (as regards E29/548). | |||
| The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. |
No environmentally sensitive sites have been identified on the tenements. A registered Heritage site known as Willsmore 1 (DAA identification 3087) straddles tenements E29/548 and E29/638. All five tenements are in good standing with no known impediments. |
||
| Exploration | Acknowledgment and appraisal of exploration | Exploration on tenements E29/638 and E29/962 has been largely for | |
| Done by Other | by other parties. | komatiite-hosted nickel sulphides and pegmatite hosted Lithium in | |
| Parties | the Mt Alexander Greenstone Belt. Exploration in the northern | ||
| section of E29/638 (Cathedrals Belt) and also limited exploration on | |||
| E29/548 has been for komatiite-hosted Ni-Cu sulphides in granite | |||
| terrane. No historic exploration has been identified on E29/954 or | |||
| E29/972. | |||
| Mafic-Ultramafic intrusion related high grade nickel-copper-PGE | |||
| sulphides were discovered at the Mt Alexander Project in 2008. | |||
| Drilling was completed to test co-incident electromagnetic (EM) and | |||
| magnetic anomalies associated with nickel-PGE enriched gossans in | |||
| the northern section of current tenement E29/638. The drilling | |||
| identified high grade nickel-copper mineralisation in granite-hosted | |||
| and East-West orientated ultramafic units and the discovery was | |||
| named the Cathedrals Prospect. | |||
| Geology | Deposit type, geological setting and style of | The Mt Alexander Project is at the northern end of a western | |
| mineralisation | bifurcation of the Mt Ida Greenstones. The greenstones are bound to | ||
| the west by the interpreted Ida Fault, a significant Craton-scale | |||
| structure that marks the boundary between the Kalgoorlie Terrane | |||
| (and Eastern Goldfields Superterrane) to the east and the Youanmi | |||
| Terrane to the west. | |||
| The Mt Alexander Project is prospective for further high-grade nickel- | |||
| mineralisation (both komatiite and mafic-ultramafic intrusive hosted) | |||
| and also precious metal mineralisation (i.e. orogenic gold) that is | |||
| typified elsewhere in the Yilgarn Craton. | |||
| MT Alexander is also prospective for pegmatite hosted Lithium | |||
| mineralisaion. The Mt Ida region is a growing Lithium district within | |||
| the Northern Goldfields area. | |||
| Drill hole | A summary of all information material to the | ||
| information | understanding of the exploration results | Drill hole collar locations are shown in the maps and tables included | |
| including tabulation of the |
following | in the body of the relevant ASX releases. | |
| information for all Material drill holes: | |||
| • Easting and northing of the drill hole | collar | ||
| •Elevation or RL (Reduced Level – | elevation | ||
| above sea level in metres) of the drill hole collar | |||
| • Dip and azimuth of the hole | |||
| • Down hole length and interception depth | |||
| • Hole length |
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| Criteria | JORC Code explanation Commentary |
|---|---|
| Data aggregation methods |
In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (e.g. cutting of high grades) and cut-off grades are usually Material and should be stated. Reported assay intersections are length and density weighted. Significant intersections are determined using both qualitative (i.e. geological logging) and quantitative (i.e. lower cut-off) methods. |
| Where aggregated intercepts incorporate short lengths of high grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. Any high-grade sulphide intervals internal to broader zones of mineralisation are reported as included intervals. |
|
| The assumptions used for any reporting of metal equivalent values should be clearly stated. No metal equivalent values are used for reporting exploration results. |
|
| Relationship between mineralisation widths and intercept lengths |
These relationships are particularly important in the reporting of exploration results. If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect. Assay intersections are reported as down hole lengths. Drill holes are planned as perpendicular as possible to intersect the target EM plates and geological targets so downhole lengths are usually interpreted to be near true width. |
| iagrams | Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported. These should include, but not be limited to a plane view of drill hole collar locations and appropriate sectional views. A prospect location map, cross section and long section are shown in the body of relevant ASX Releases. |
| Balanced Reporting |
Where comprehensive reporting of all Exploration Results is not practical, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. Reports on recent exploration can be found in ASX Releases that are available on our website at www.stgm.com.au: The exploration results reported are representative of the mineralisation style with grades and/or widths reported in a consistent manner. |
| Other substantive exploration data |
Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observation; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. All material or meaningful data collected has been reported. |
| Further Work | The nature and scale of planned further work (e.g. tests for lateral extensions or depth extensions or large – scale step – out drilling).Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive. A discussion of further exploration work underway is contained in the body of recent ASX Releases. Further exploration will be planned based on ongoing drill results, geophysical surveys and geological assessment of prospectivity. |
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