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ST GEORGE MINING LIMITED — Capital/Financing Update 2016
Jun 28, 2016
65782_rns_2016-06-28_f7513958-766e-4306-850e-8fa801a542ab.pdf
Capital/Financing Update
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ASX / MEDIA RELEASE
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29 June 2016
NICKEL‐COPPER SULPHIDE DISCOVERY CONFIRMED AT STRICKLANDS PROSPECT
HIGHLIGHTS:
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Assays for the first ever drilling at the Stricklands Prospect confirm nickel‐copper sulphide mineralisation intersected at three separate targets
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A new discovery of mineralisation that substantially extends the mineralised ultramafics in the Cathedrals Belt and highlights the potential for further discoveries at the Mt Alexander Project
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Nickel‐copper sulphides intersected at shallow depths 50m below surface:
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MAD20: 9.3m of weak‐moderate disseminated mineralisation from 44.2m grading into matrix and massive sulphides with 0.93m @ 2.5%Ni, 0.68%Cu, 0.16%Co and 1.1g/t total PGEs from 53.52m
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MAD22: 7.95m of moderate disseminated‐blebby sulphide mineralisation from 41.9m grading into stringer and massive sulphides with 2.78m @ 1.62%Ni, 2.51%Cu, 0.07%Co and 1.88g/t PGEs from 49.85m including 0.23m @ 13.1%Cu, 43g/tAg from 52.4m
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MAD23: 3.75m of moderate blebby‐disseminated sulphides from 53.7m grading into matrix sulphides with 1.5m @ 1.29%Ni, 0.57%Cu, 0.06%Co and 1.11g/t total PGEs from 55.55m and massive sulphides with 0.25m @ 4.18%Ni, 3.4%Cu, 0.18%Co and 4.29g/t PGEs from 57.45m
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The mineralisation intersected in drill holes MAD20 and MAD23 is the first in situ massive nickel‐copper sulphide mineralisation encountered in the Cathedrals Belt and supports the potential for additional primary nickel‐copper sulphide mineralisation at the Mt Alexander Project
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Downhole electromagnetic (DHEM) surveys of MAD22 and MAD24 have identified several off‐hole EM conductors that warrant immediate testing
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Drilling of new targets at Stricklands, Cathedrals and Investigators to commence soon
NEW DISCOVERY AT STRICKLANDS PROSPECT
St George Mining Limited (ASX: SGQ ) (‘St George Mining’ or ‘the Company’) is pleased to announce that laboratory assays for the first ever drill holes completed at the Stricklands Prospect have confirmed that nickel‐copper sulphides have been discovered at this previously untested target at the Mt Alexander Project in Western Australia.
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ASX / MEDIA RELEASE
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Drill holes MAD20, MAD22 and MAD23 targeted separate EM conductors at the Stricklands Prospect, located 1km west‐southwest of the high grade nickel‐copper sulphide discovery made by BHP Billiton at the Cathedrals Prospect in 2008. Each of the new drill holes at Stricklands intersected high grade nickel‐copper sulphide mineralisation, an excellent result for the first drill programme in a new target area.
St George’s discovery of massive nickel‐copper sulphides at Stricklands is considered very important in the evolving exploration model at Mt Alexander and confirms that the high grade mineral system in the Cathedrals Belt is much more extensive than previous drilling had indicated.
The discovery of in situ komatiite hosted nickel‐copper sulphide mineralisation also has positive implications for the multiple ultramafic belts to the south of the Cathedrals Belt, at least one of which has never been drill tested with the others remaining under‐explored.
Assays have confirmed the following significant intersections (length and density weighted) for drill holes MAD20, MAD22 and MAD23 at Stricklands. Results for drill hole MAD19, the last drill hole completed by St George at the Cathedrals Prospect to test a deep off‐hole DHEM plate, have now been received and the significant intersection is also included below:
| Hole ID | East (GDA94) |
North (GDA94) |
Dip | Azi | Depth (m) |
From (m) |
To (m) |
Width | Ni (%) |
Cu (%) |
Co (%) |
Total PGEs |
Au **g/t ** |
Ag **g/t ** |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MAD19 | 233749.50 | 6807056.04 | ‐60 | 180 | 200 | 156.8 | 159.9 | 3.11 | 2.61 | 0.75 | 0.09 | 1.96 | 0.06 | 2.67 |
| Including | 158.7 | 159.3 | 0.55 | 5.91 | 1.18 | 0.2 | 5.61 | 0.08 | 3.5 | |||||
| MAD20 | 232740.44 | 6806665.65 | ‐75 | 180 | 100.1 | 44.20 | 53.52 | 9.32 | 0.29 | 0.12 | 0.02 | 0.27 | 0.03 | 0.29 |
| 53.52 | 54.45 | 0.93 | 2.5 | 0.68 | 0.16 | 1.1 | 0.03 | 1.54 | ||||||
| MAD22 | 232525.87 | 6806526.92 | ‐60 | 40 | 138.9 | 41.90 | 49.85 | 7.95 | 0.55 | 0.3 | 0.02 | 0.58 | 0.06 | 1.48 |
| 49.85 | 52.63 | 2.78 | 1.62 | 2.51 | 0.07 | 1.88 | 0.17 | 8.44 | ||||||
| Including | 52.40 | 52.63 | 0.23 | 0.9 | 13.1 | 0.04 | 3.94 | 0.16 | 43 | |||||
| MAD22 | 232525.87 | 6806526.92 | ‐60 | 40 | 138.9 | 52.63 | 53.72 | 1.09 | 0.46 | 0.27 | 0.02 | 0.98 | 0.07 | 1 |
| MAD23 | 232470.35 | 6806468.94 | ‐60 | 355 | 124.3 | 53.70 | 57.45 | 3.75 | 0.81 | 0.36 | 0.04 | 0.73 | 0.03 | 1.35 |
| Including | 55.55 | 57.05 | 1.5 | 1.29 | 0.57 | 0.06 | 1.11 | 0.03 | 2 | |||||
| MAD23 | 232470.35 | 6806468.94 | ‐60 | 355 | 124.3 | 57.45 | 57.70 | 0.25 | 4.18 | 3.4 | 0.18 | 4.29 | 0.11 | 9 |
St George Mining Executive Chairman, John Prineas said:
“St George’s discovery at Stricklands strongly supports the potential for further high grade massive nickel‐copper sulphide mineralisation at this under‐explored Project.
“We are seeing high grades of nickel and copper in multiple intersections across the Project area, which highlights the fertility of the large mineral system at the Cathedrals Belt. The sulphides are also high in cobalt and PGEs, further enhancing the potential value of this mineralisation.
“The downhole EM targets at Stricklands are shaping up as very attractive for further massive nickel‐ copper sulphide mineralisation, and will be drilled soon along with the new strong EM conductors at Investigators.
“We are increasingly confident that our upcoming drill programme will deliver further exploration success.”
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ASX / MEDIA RELEASE
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The discovery of high grade nickel‐copper sulphides at Stricklands confirms that mineralised ultramafics in the Cathedrals Belt extend intermittently for over 2km. Together with the unexplored Investigators Prospect, the mineralised ultramafics in the Cathedrals Belt are interpreted to extend intermittently for over 3km.
The intersections of nickel‐copper sulphides at Stricklands are at shallow depths in fresh rock just below the base of weathering, which averages 35m at Stricklands. As with the Cathedrals Prospect, drilling has not yet tested for mineralisation at depth (beyond about 120m from surface) where there may be potential for further mineralised ultramafics.
Drill holes MAD21 and MAD24 were also completed at Stricklands in the recent drill programme. These holes did not intersect the target EM conductors and the assays indicated no significant intersections for these holes. The modelling of the conductor targeted by MAD21 was revised and subsequently successfully intersected by MAD23.
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Figure 1 – a plan view of the Cathedrals and Stricklands Prospects over TMI magnetics showing the successful nickel sulphide drill holes along the Cathedrals Belt.
STRONG EXPLORATION UPSIDE AT STRICKLANDS
The sulphide mineralisation intersected in MAD20 at Stricklands has a profile that is typical of komatiite hosted nickel sulphide mineralisation with a gradation from disseminated nickel sulphides, into matrix and stringers and then into high grade massive sulphides.
The DHEM survey in MAD20 indicated that the drill hole had intersected the edge of the EM conductor, with the centre of the conductor being approximately 10m to the east of the massive sulphide intersection. A second DHEM plate was identified below the MAD20 end of hole, suggesting that mineralisation may also be present at depth. A further fixed loop EM survey will be completed over this target next month to refine the conductors for drill testing.
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ASX / MEDIA RELEASE
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MAD22 intersected a complex section of blebby‐disseminated, brecciated, stringer and massive nickel‐ copper sulphides over 11.8m. The stringer and massive sulphides are interpreted to have been remobilised from a primary source of massive sulphide mineralisation.
Figure 2 is a photo of massive chalcopyrite intersected in MAD22 between 52.4m and 52.63m. The grade of copper in this interval is 13.1%Cu. Figure 3 is a photo of nickel‐copper stringers intersected by MAD22 from 50.26m to 50.8m that graded 2.05%Ni and 1.05%Cu over the interval. Figure 4 shows the primary igneous contact of the massive sulphide in MAD23 with the mafic footwall at 57.7m.
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Figure 2 – drill core from MAD22 with massive chalcopyrite (yellow‐green) in contact with ultramafic (dark grey). Assays for this interval (52.4m to 52.63m) returned 13.1%Cu and 43g/tAg.
The DHEM survey in MAD22 identified two strong off‐hole EM conductors to the east and west of the drill hole. These new conductors are likely to represent nickel‐copper sulphide mineralisation and may be the primary source of the remobilised massive sulphides seen in MAD22.
The new conductors are modelled with conductivities of 8,551 and 6,578 Siemens, and are located laterally to the mineralisation intersected by MAD22 at around 50m below surface.
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ASX / MEDIA RELEASE
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Figure 3 – drill core from MAD22 (50.26 to 50.8m) showing nickel‐copper stringers (the light yellow is chalcopyrite and the tan brown is pentlandite‐pyrrhotite). These stringers likely remobilised from massive sulphides that may be the off‐hole DHEM conductors near MAD22.
MAD24 was designed to test a large EM plate modelled from a surface EM survey. The drill hole did not intersect any conductive material that could explain the strong EM response. The DHEM survey in MAD24 identified two off‐hole EM conductors on either side of the drill hole, rather than one large conductor that was modelled from the surface EM survey.
These DHEM conductors are consistent with massive sulphide bodies with conductivity of 13,871 Siemens and 12,026 Siemens respectively. The targets are located approximately 48m and 80m below surface and will be tested in the next drill programme at Mt Alexander.
A further announcement regarding the drill targets for the upcoming drill programme will be announced next week, with drilling planned to commence late next week.
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ASX / MEDIA RELEASE
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Figure 4 – primary igneous contact of massive nickel‐copper sulphides against footwall mafics in MAD23 (57.7m). Lobate plumes of massive sulphide have projected into the footwall mafic and indicate in situ ultramafic‐mafic contact.
XRF ANALYSIS:
References to XRF results and to portable XRF analysis relate to analysis using a hand‐held Olympus Innov‐X Spectrum Analyser. This portable device provides immediate analysis of modal mineralogy of drill samples. The device is unable to reliably detect precious metals (e.g. gold, PGEs) in samples but is considered to be more reliable for base metal assessment.
Portable XRF analysis is able to detect base metals, like nickel and copper, though values are considered less reliable in disseminated sulphides due to the finer grain and interstitial textures. The XRF device is more reliable for detection of base metals, like nickel and copper, within massive sulphides.
Results from XRF analysis are stated as indicative only and are preliminary to subsequent confirmation by laboratory assays.
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ASX / MEDIA RELEASE
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ABOUT THE MT ALEXANDER PROJECT:
The Mt Alexander Project is located 120km south‐southwest of the Agnew‐Wiluna belt which hosts numerous world class nickel deposits. The Project comprises three granted exploration licences – E29/638, E29/548 and E29/962.
The Cathedrals nickel‐copper discovery as well as the Stricklands and Investigators Prospects are located on E29/638, which is held in joint venture by Western Areas Limited (25%) and St George (75%). St George is the Manager of the Project with Western Areas retaining a 25% non‐contributing interest in the Project (in regard to E29/638 only) until there is a decision to mine.
For further information, please contact:
John Prineas Colin Hay Executive Chairman Professional Public Relations St George Mining Limited (+61) 08 9388 0944 mob 0404 683 355 (+61) 411 421 253 [email protected] [email protected]
Competent Person Statement:
The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Mr Matthew McCarthy, a Competent Person who is a Member of The Australian Institute of Geoscientists. Mr McCarthy is employed by St George Mining Limited.
Mr McCarthy 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 Joint Ore Reserves Committee (JORC) Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr McCarthy consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
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The following sections are 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 | The sections of the core that are selected for assaying are marked |
| techniques | channels, random chips, or specific specialised | up and then recorded on a sample sheet for cutting and sampling at |
| industry standard measurement tools |
the certified assay laboratory. Samples of HQ or NQ2 core are cut | |
| appropriate to the minerals under |
just to the right of the orientation line using a diamond core saw, | |
| investigation, such as down hole gamma | with half core sampled lengthways for assay. | |
| sondes, or handheld XRF instruments, etc.). | ||
| These examples should not be taken as limiting | ||
| the broad meaning of sampling. | ||
| Include reference to measures taken to ensure | Wherever possible the same side of the drill core is sampled to | |
| sample representivity and the appropriate | ensure sample is representative. Appropriate QAQC samples are | |
| calibration of any measurement tools or | inserted into the sequences as per industry best practice. | |
| systems used. | ||
| Aspects of the determination of mineralisation | Diamond core (both HQ and NQ2) is half‐core sampled to geological | |
| that are Material to the Public Report. | boundaries no more than 1.2m and no less than 20cm. Samples less | |
| In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to |
than 3kg are crushed to 10mm, dried and then pulverised to 75µm. Samples greater than 3kg are first crushed to 10mm then finely crushed to 3mm and input into the rotary splitters to produce a consistent output weight for pulverisation. |
|
| produce a 30 g charge for fire assay’). In other | Pulverisation produces a 40g charge for fire assay. Elements | |
| cases more explanation may be required, such | determined from fire assay are gold (Au), platinum (Pt) and | |
| as where there is coarse gold that has inherent | palladium (Pd) with a 1ppb detection limit. To determine other PGE | |
| sampling problems. Unusual commodities or | concentrations (Rh, Ru, Os, Ir) a 25g charge for nickel sulphide | |
| mineralisation types (eg submarine nodules) | collect fire assay is used with a 1ppb detection limit. | |
| may warrant disclosure of detailed information. |
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. | ||
| LOI (Loss on Ignition) will be completed on selected samples to | ||
| determine the percentage of volatiles released during heating of | ||
| samples to 1000°C. | ||
| Drilling | Drill type (eg core, reverse circulation, open‐ | Diamond drilling is completed using HQ sized coring equipment |
| techniques | hole hammer, rotary air blast, auger, Bangka, | through the weathered zone (mostly saprock) with 3m barrels, and |
| sonic, etc) and details (eg core diameter, triple | then HQ or NQ2 in fresh rock with 3m or 6m barrels as required. The | |
| or standard tube, depth of diamond tails, face‐ | core is oriented using ACT II electric core orientation. | |
| sampling bit or other type, whether core is | ||
| oriented and if so, by what method, etc). | ||
| Drill sample | Method of recording and assessing core and | Diamond core recoveries are recorded during drilling and reconciled |
| recovery | chip sample recoveries and results assessed. | 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. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Measures taken to maximise sample recovery | Measures taken to maximise core recovery include using | |
| and ensure representative nature of the | appropriate core diameter and shorter barrel length through the | |
| samples. | weathered zone, which at Cathedrals is generally <25m and | |
| Stricklands <40m depth. 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 | No sample recovery issues have yet been identified that would | |
| recovery and grade and whether sample bias | impact on potential sample bias in the competent fresh rocks that | |
| may have occurred due to preferential | host the mineralised sulphide intervals. | |
| loss/gain of fine/coarse material. | ||
| Logging | Whether core and chip samples have been | Geological logging is completed for all drill holes with lithology, |
| geologically and geotechnically logged to a | alteration, mineralisation, structure and veining recorded. The | |
| level of detail to support appropriate Mineral | logging is recorded digitally and imported in the St George Mining | |
| Resource estimation, mining studies and | central database. | |
| metallurgical studies. | ||
| Whether logging is qualitative or quantitative | Logging is both qualitative and quantitative depending on the field | |
| in nature. Core (or costean, channel, etc.) | being captured. Core is photographed with one tray per photo and | |
| photography. | stored digitally. | |
| The total length and percentage of the relevant | All drill holes are geologically logged in full. | |
| intersections logged. | ||
| Sub‐sampling | If core, whether cut or sawn and whether | The HQ and NQ2 core is cut in half length ways just to the right of |
| techniques and | quarter, half or all core taken. | the orientation line using a diamond core saw. All samples are |
| sample | collected from the same side of the core where practicable. | |
| preparation | ||
| If non‐core, whether riffled, tube sampled, | No non‐core holes were drilled in the recent drill program. | |
| rotary split, etc and whether sampled wet or | ||
| dry. | ||
| For all sample types, the nature, quality and | The entire sample is pulverised to 75µm using LM5 pulverising mills. | |
| appropriateness of the sample preparation | Samples are dried, crushed and pulverized to produce a | |
| technique. | homogenous representative sub‐sample for analysis. A grind quality | |
| target of 90% passing 75µm is used. | ||
| Quality control procedures adopted for all sub‐ | Quality control procedures include submission of Certified | |
| sampling stages to maximise representivity of | Reference Materials (standards), duplicates and blanks with each | |
| samples. | sample batch. QAQC results are routinely reviewed to identify and | |
| resolve any issues. | ||
| Measures taken to ensure that the sampling is | Duplicate samples are selected during sampling. Samples comprise | |
| representative of the in situ material collected, | two quarter core samples. | |
| including for instance results for field | ||
| duplicate/second‐half sampling. | ||
| Whether sample sizes are appropriate to the | The sample sizes are considered to be appropriate for base metal | |
| grain size of the material being sampled. | sulphide mineralisation and associated geology. | |
| Quality of | The nature, quality and appropriateness of the | Diamond core samples are analysed for Au, Pt and Pd using a 40g |
| assay data and | assaying and laboratory procedures used and | lead collection fire assay; for Rh, Ru, Os, Ir using a 25g nickel |
| laboratory | whether the technique is considered partial or | sulphide collection fire assay; and for Ag, Al, As, Bi, Ca, Cd, Co, Cr, Fe, |
| tests | total. | K, Li, Mg, Mn, Mo, Nb, Ni, P, Pb, S, Sb, Sn, Te, Ti, V, W, Zn using a |
| four acid digest and ICP‐AES or MS finish. The assay method and | ||
| detection limits are appropriate for analysis of the elements | ||
| required. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| For geophysical tools, spectrometers, handheld | A handheld XRF instrument (Olympus Innov‐X Spectrum Analyser) is |
|
| XRF instruments, etc, the parameters used in | used to systematically analyse the drill core onsite. One reading is |
|
| determining the analysis including instrument | taken per meter, however for any samples with massive sulphide |
|
| make and model, reading times, calibrations | mineralisation then five to ten samples are taken at set intervals per |
|
| factors applied and their derivation, etc. | meter. The instruments are serviced and calibrated at least once a | |
| year. Field calibration of the XRF instrument using standards is | ||
| periodically performed. | ||
| The handheld XRF results are only used for preliminary assessment | ||
| and reporting of element compositions, prior to the receipt of assay | ||
| results from the certified laboratory. | ||
| Nature of quality control procedures adopted | Laboratory QAQC involves the use of internal lab standards using |
|
| (eg standards, blanks, duplicates, external | certified reference material (CRMs), blanks and pulp duplicates as |
|
| laboratory checks) and whether acceptable | part of in house procedures. The Company will also submit a suite of |
|
| levels of accuracy (i.e. lack of bias) and | CRMs, blanks and some duplicates. |
|
| precision have been established. | Sample preparation checks for fineness are performed by the | |
| laboratory to ensure the grind size of 90% passing 75µm is being | ||
| attained. | ||
| Verification of | The verification of significant intersections by | Significant intersections are verified by the Exploration Manager of |
| sampling and | either independent or alternative company | St George Mining. |
| assaying | personnel. | |
| The use of twinned holes. | One twin hole (MAD18) was drilled in the recent drill program to | |
| test for repeatability and continuity of the massive sulphide | ||
| intersection in MAD15. | ||
| Documentation of primary data, data entry | Primary data is captured onto a laptop using acQuire software and | |
| procedures, data verification, data storage | includes geological logging, sample data and QA/QC information. | |
| (physical and electronic) protocols. | 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 reported. | ||
| Location of | Accuracy and quality of surveys used to locate | Drill holes have been located and pegged using a DGPS system with |
| data points | drill holes (collar and down‐hole surveys), | an expected accuracy of +/‐0.05mmm for easting, northing and |
| trenches, mine workings and other locations | elevation. |
|
| used in Mineral Resource estimation. | Downhole surveys are conducted using a single shot camera | |
| approximately every 30m during drilling to record and monitor | ||
| deviations of the hole from the planned dip and azimuth. Post‐ | ||
| drilling downhole gyroscopic surveys are conducted, which provide | ||
| much more accurate survey results. | ||
| Specification of the grid system used. | The grid system used at the Mt Alexander project is GDA94 (MGA), | |
| zone 51. | ||
| Quality and adequacy of topographic control. | Elevation data has been acquired using DGPS surveying at individual | |
| collar locations and entered into the central database. A | ||
| topographic surface has been created using this elevation data. | ||
| Data spacing | Data spacing for reporting of Exploration | The recent diamond drill program was targeting modelled EM |
| and | Results. | conductors and other geological criteria for massive nickel‐copper‐ |
| distribution | PGE sulphide mineralisation. The spacing and distribution of the drill | |
| holes was appropriate to test the defined targets. | ||
| Whether the data spacing and distribution is | Drilling is still largely reconnaissance exploration. Mineralisation at |
|
| sufficient to establish the degree of geological | Cathedrals has not yet demonstrated to be sufficient in both |
|
| and grade continuity appropriate for the | geological and grade continuity to support the definition of Mineral |
|
| Mineral Resource and Ore Reserve estimation | Resource and Reserves and the classifications applied under the |
|
| procedure(s) and classifications applied. | 2012 JORC code. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Whether sample compositing has been applied. | No compositing has been applied to the exploration results. |
|
| Orientation of | Whether the orientation of sampling achieves | Drill holes were planned as perpendicular as possible to the target |
| data in relation | unbiased sampling of possible structures and | EM plates to approximate true width. Most of the ultramafic units |
| to geological | the extent to which this is known, considering | dip shallow to the north and where possible drill holes have been |
| structure | the deposit type. | planned to intersect perpendicular to dip. The orientation of key |
| structures may be locally variable. | ||
| If the relationship between the drilling | No orientation based sampling bias has been identified in the data | |
| orientation and the orientation of key | to date. | |
| mineralised structures is considered to have | ||
| introduced a sampling bias, this should be | ||
| assessed and reported if material. | ||
| Sample | The measures taken to ensure sample security. | Chain of custody is managed by St George Mining. Core samples will |
| security | be stored in the secure facilities at Bureau Veritas laboratory in | |
| Perth. Transportation of core is managed by St George contractors | ||
| and Bureau Veritas and actively track monitored. | ||
| Audits or | The results of any audits or reviews of sampling | No audits or reviews have been conducted at this stage. |
| reviews | techniques and data. |
Section 2 Reporting of Exploration Results
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | Type, name/reference number, location and | The Mt Alexander Project is comprised of three granted Exploration |
| Tenement and | ownership including agreements or material | Licences (E29/638, E29/548 and E29/962). Tenement E29/638 is |
| Land Status | issues with third parties including joint | held in Joint Venture between St George (75% interest) and Western |
| ventures, partnerships, overriding royalties, | Areas (25% interest). E29/638 and E29/548 are also subject to a |
|
| native title interests, historical sites, wilderness | royalty in favour of a third party that is outlined in the ASX Release |
|
| or national park and environmental settings. | 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 three tenements are in good standing and no known | ||
| impediments exist. | ||
| 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 in the Mt Alexander Greenstone |
| Parties | Belt. Exploration in the northern section of E29/638 (Cathedrals | |
| Prospect) and also limited exploration on E29/548 has been for | ||
| komatiite‐hosted Ni‐Cu sulphides in granite terrane. | ||
| The target lithological unit in the Mt Alexander Greenstone belt is | ||
| the Central Ultramafic Unit, which has been explored by a number | ||
| of parties, most recently by Nickel West. | ||
| High grade nickel‐copper 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 ultramafic units and the discovery | ||
| was named the Cathedrals Prospect. The tenements remain | ||
| underexplored. | ||
| 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 Ida Fault, a significant Craton‐scale structure that | ||
| marks the boundarybetween the Kalgoorlie Terrane(and Eastern |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Goldfields Superterrane) to the east and the Youanmi Terrane to the | ||
| west. | ||
| The Mt Alexander Project is prospective for further high‐grade | ||
| komatiite‐hosted nickel‐copper‐PGE mineralisation (both |
||
| greenstone and granite hosted) and also precious metal | ||
| mineralisation (i.e. orogenic gold) that is typified elsewhere in the | ||
| Yilgarn Craton. | ||
| Drill hole | A summary of all information material to the | Table 1 to this JORC Section contains drill holes with significant |
| information | understanding of the exploration results | intersections from historic exploration at the Cathedrals Prospect. |
| including tabulation of the following |
||
| information for all Material drill holes: | ||
| • Easting and northing of the drill hole collar | ||
| •Elevation or RL (Reduced Level – elevation | ||
| above sea level in meters) of the drill hole collar | ||
| • Dip and azimuth of the hole | ||
| • Down hole length and interception depth | ||
| • Hole length | ||
| Data | In reporting Exploration Results, weighting | Reported assay intersections are length and density weighted. |
| aggregation | averaging techniques, maximum and/or |
Significant intersections are determined using both qualitative (i.e. |
| methods | minimum grade truncations (e.g. cutting of | geological logging) and quantitative (i.e. lower cut‐off) methods. For |
| high grades) and cut‐off grades are usually | massive sulphide intersections the nominal lower cut‐off is 2% for | |
| Material and should be stated. | either nickel or copper. For disseminated, matrix and stringer | |
| sulphide intersections the nominal lower cut‐off for nickel is 0.3%. | ||
| Where aggregated intercepts incorporate short | Any high grade sulphide intervals internal to broader zones of | |
| lengths of high grade results and longer | sulphide mineralisation are reported as_included_intervals. | |
| 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. | ||
| The assumptions used for any reporting of | No metal equivalent values have yet been used for reporting | |
| metal equivalent values should be clearly | exploration results. | |
| stated. | ||
| Relationship | These relationships are particularly important | Assay intersections are reported as down hole lengths. Drill holes |
| between | in the reporting of exploration results. | were planned as perpendicular as possible to intersect the target |
| mineralisation widths and intercept lengths |
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, |
EM plates so downhole lengths are near true width. Results from the recent drill program will be reviewed further to confirm the relationship between downhole lengths and true widths. |
| there should be a clear statement to this effect | ||
| (e.g. down hole length, true width not known). | ||
| Diagrams | Appropriate maps and sections (with scales) | Relevant maps are shown in the ASX release. |
| 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. | ||
| Balanced | Where comprehensive reporting of all |
The exploration results reported are representative of the |
| Reporting | Exploration Results is not practical, |
mineralisation style with grades and/or widths reported in a |
| representative reporting of both low and high | consistent manner. | |
| grades and/or widths should be practiced to | ||
| avoid misleading reporting Exploration Results. | ||
| Other | Other exploration data, if meaningful and | No other exploration data collected to date is considered material or |
| substantive | material, should be reported including (but not | meaningful at this stage. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| exploration | limited to): geological observation; geophysical | |
| data | 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. | ||
| Further Work | The nature and scale of planned further work | Further exploration is being planned from the ongoing results of the |
| (e.g. tests for lateral extensions or depth | recent diamond drill program and EM geophysical programs | |
| extensions or large – scale step – out drilling). | outlined in the ASX Release. | |
| Diagrams clearly highlighting the areas of | ||
| possible extensions, including the main |
||
| geological interpretations and future drilling | ||
| areas, provided this information is not | ||
| commercially sensitive. |
| HOLE ID | EASTING | NORTHING | DIP | AZM | DEPTH | FROM | TO | WIDTH | Ni | Cu | Total PGEs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (m) | (m) | (deg) | (deg) | (m) | (m) | (m) | (m) | (%) | (%) | (g/t) | |
| MAD012 | 233885 | 6806995 | ‐70 | 170 | 111.5 | 81.5 | 95.5 | 14 | 1.9 | 0.8 | 1.8 |
| including | 91.4 | 95.4 | 4 | 4.9 | 1.7 | 3.9 | |||||
| MAD013 | 233805 | 6806955 | ‐70 | 170 | 93.3 | 56.3 | 59.3 | 3 | 3.8 | 1.6 | 2.7 |
| including | 57.6 | 59 | 1.4 | 7.1 | 3.0 | 2.9 | |||||
| MARC49 | 233759 | 6806979 | ‐55 | 180 | 142 | 60 | 66 | 6 | 3.3 | 1.5 | 2.7 |
Table 1 to 2012 JORC Section: Significant intersections at the Cathedrals Prospect on E29/638.
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