AI assistant
RAND MINING LIMITED — Interim / Quarterly Report 2014
Apr 28, 2014
65721_rns_2014-04-28_b798c02a-7561-41f4-96df-81bafa06d22b.pdf
Interim / Quarterly Report
Open in viewerOpens in your device viewer
==> picture [379 x 135] intentionally omitted <==
29 April 2014
Company Announcements Office Australian Securities Exchange Ltd 4[th] Floor 20 Bridge Street Sydney NSW 2000
Dear Sir/Madam
EKJV March 2014 Quarterly Exploration Report
Rand Mining Ltd (ASX code: RND) has pleasure in providing the EKJV March 2014 Quarterly Exploration Report.
Yours sincerely Rand Mining Ltd
==> picture [71 x 43] intentionally omitted <==
Roland Berzins Company Secretary
==> picture [175 x 85] intentionally omitted <==
==> picture [88 x 9] intentionally omitted <==
----- Start of picture text -----
ACN 139 342 859
----- End of picture text -----
29th April 2014
Mr Anton Billis Director Rand Mining Ltd PO Box 307 West Perth WA 6872
Dear Anton,
RE: EKJV March 2014 Exploration Report
As you requested, I have reviewed the following Northern Star report:
-
2014 Q1 EKJV Exploration Report
-
Accompanying tables and diagrams
The report is in a form that can be released to the market.
Yours sincerely
==> picture [145 x 43] intentionally omitted <==
Matthew Sullivan B. App. Sc., M. Aus.I.M.M
Competency Statement
The information in this report relation to Exploration Results and Mineral Resources is based on information reviewed by Mr Matthew Sullivan who is a Member of the Australasian Institute of Mining and Metallurgy and has sufficient exploration experience which is relevant to the style of mineralisation under consideration to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves’. Mr Sullivan is a consultant working for Rand Mining and consents to the inclusion of the matters based on his information in the form and context in which it appears.
Northern Star Resources Ltd
==> picture [60 x 50] intentionally omitted <==
Kalgoorlie Project
EKJV Exploration Quarterly Report
March 2014
1 SUMMARY
East Kundana Joint Venture
A total of 7795.16m of diamond drilling and 3767.3m of RC drilling were completed during the quarter. The drilling was undertaken at the Kundana camp at two prospects, Pegasus and Ambition. At Ambition 7 RC drill holes were completed for a total of 1110m. At Pegasus 2657.3m of RC was completed drilling 12 diamond pre‐collars and 3 RC drill holes, and 15 diamond drill holes and 4 diamond drill tails were completed for a total of 7795.16m.
1
==> picture [59 x 50] intentionally omitted <==
2 DRILLING
7795.16m of diamond and 3767.3m of RC was drilled during the Quarter. Drilling was at two prospects in the EKJV, Ambition and Pegasus. Ambition is a drill testing stage project and is in the initial stage of drill testing a distinct soil geochemical anomaly along strike to the north of the K2 structure and stratigraphy.
Table 1. Drilling Summary
| Metres ‐ | No. | Metres ‐ | No. | Metres ‐ | No. | ||||
|---|---|---|---|---|---|---|---|---|---|
| Project | Prospect | Tenement | Comments | ||||||
| RAB/AC | Samples | RC | Samples | DD | Samples | ||||
| EKJV | Ambition | M16/326 | 1110 | 685 | |||||
| EKJV | Pegasus | M16/309 | 2657.3 | 1473 | 7795.16 | 2630 | |||
| TOTAL | 3767.3 | 2158 | 7795.16 | 2630 |
2.1 Ambition
A soils and lag sampling programme north of the Arctic Mine (K2 structure) in the Kundana area defined a tungsten‐arsenic anomaly consistent with the other deposits along the Zulieka shear. A stratigraphic diamond hole drilled in late 2013 tested this anomaly and identified elevated gold grades in a laminated shear vein on a major structural contact (0.25m @ 0.27g/t).
A RC drill programme commenced in late February to define the position of K2 and test the tenor of veining on that contact. A total of 168m were drilled under Barrick Gold ownership in February, with one hole completed. The remaining holes were drilled in March for 942m giving a total programme of seven RC holes for 1,110m.
All holes drilled to date have positively identified the position of the mineralised structure. A key aim of the project was to determine the location and structural position of the gold anomalism and improve the geological interpretation in the northern Kundana Zuleika area. Previous structural interpretations have been limited to aeromagnetic imagery. Three holes have identified elevated gold grades on the structure of a magnitude consistent with the grade of the structure proximal (~200m) to the Kundana‐style orebodies to the south. All assay jobs returned for Ambition have passed QAQC checks.
2
==> picture [59 x 50] intentionally omitted <==
==> picture [445 x 642] intentionally omitted <==
Figure 1. Ambition collar locations shown over the regional geology.
3
==> picture [59 x 50] intentionally omitted <==
2.2 Pegasus
During the quarter, three surface diamond rigs drilled a total of 7795.16m for advanced exploration and resource definition drilling programmes throughout the Pegasus prospect, focusing on three main areas of mineralisation, Polaris, Centauri, and the Jewellery Box (Figures 2 and 3). An RC rig was also present during the quarter drilling pre‐collars and RC holes for a total for a total of 2657.3m. In total, 10,452.46m were drilled at Pegasus during the March Quarter.
Two advanced exploration holes (PGCD14003, PGCD14005) were drilled at depth below the Pegasus resource, at approximately the 5750 level, to help bring the area up to a sub inferred category (based on 160m x 80m drill spacing). These two holes had RC pre collars drilled in February; with PGCD14005 intersecting a thin but well mineralised K2 intersection with multiple visible gold crystals.
Four advanced exploration holes (PGDD14002, 14009, 14021, and 14029) were drilled at varying depths throughout the Polaris area, an area to the north of the Jewellery Box with four holes drilled in 2012 that returned significant K2 intersections. These four holes were drilled as part of the longer term aim to upgrade the area as an inferred resource category (80m x 80m drill spacing), as well as filling in the area between the Jewellery Box and Polaris areas to a sub‐indicated resource category (40m x 80m drill spacing). Three holes, PGDD14009, 14021, and 14029, all intersected highly favourable K2 veining, with visible gold in 14009 and 14029. PGDD14009 is highly mineralised and wide (~4m), and returned very favourable results (9.0m @ 37.8 g/t Au).
In total thirteen RC pre‐collars (PGCD14003, PGCD14005 – 14007, PGCD14020‐14027), ranging from 60 ‐ 270m depth, were drilled at approximately the 5850 level across the width of the Polaris and Centauri areas (combined strike of approximately 600m). To date five of the diamond tails have been drilled (PGCD14003, PGCD14005‐14007 and PGCD14021), with another seven yet to be drilled.
Two shallow advanced exploration holes were drilled on the northern edge of the Pegasus resource in an area with previous sparse drilling, the majority of which was RC drilling only. These two holes were drilled to target the possibility of northerly plunging shoots extending downwards from the northern proposed pit edge towards high grade intercepts in the Polaris area. PGDD14018 (~6100 level) was thin but well mineralised with visible gold and but provided much needed structural and textural data in an area that previously contained only RC intercepts.
Three resource definition holes (PGDD14012, 14019, 14028) were drilled as a down dip extension to the Jewellery Box mineralisation, with the aim of adding width to the highly mineralised vertical plane defined by PGDD13033 and 13034 drilled late 2013. Both PGDD14012 and 14028 were thick (3m and 6m respectively) and highly mineralised, with common visible gold. PGDD14028 should return favourable results based on its mineralogy, visible gold content and width (PGDD14019 was aborted due to significant swing to the south and was redrilled as PGDD14028).
4
==> picture [59 x 50] intentionally omitted <==
==> picture [495 x 243] intentionally omitted <==
==> picture [495 x 242] intentionally omitted <==
----- Start of picture text -----
Pegasus
Mineralistion
----- End of picture text -----
Figure 2. Pegasus collar locations shown over aerial photography.
5
2.3 Assay Results ‐ Drilling
Assays for samples submitted from Ambition and Pegasus Prospects were received, details given below.
| Ambition Drill Testing | Ambition Drill Testing | Ambition Drill Testing | Ambition Drill Testing | Ambition Drill Testing | Ambition Drill Testing | Ambition Drill Testing | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Hole # | Easting (GDA94) |
Northing (GDA94) |
Drill Hole Collar RL (GDA94) |
Dip (Degrees) |
Azimuth (Degrees, GDA94) |
End of Hole Depth |
Downhole From(m) |
Downhole To(m) |
Downhole Intersection (m) |
Au (gpt) uncut |
Comments | |
| AMRC14001 | 328238 | 6605383 | 372 | ‐60 | 60 | 180 | 56.0 | 57.0 | 1.0 | 1.69 | ||
| AMRC14002 | 328315 | 6605215 | 369 | ‐60 | 60 | 150 | 115 | 117 | 2.0 | 1.80 | ||
| AMRC14003 | 328409 | 6605015 | 368 | ‐60 | 60 | 174 | 151 | 153 | 2.0 | 5.95 | ||
| AMRC14004 | 328811 | 6604848 | 367 | ‐60 | 60 | 174 | NSI | |||||
| AMRC14005 | 328617 | 6604680 | 368 | ‐60 | 60 | 150 | 128 | 129 | 1.0 | NSI | ||
| AMRC14006 | 328686 | 6604496 | 366 | ‐60 | 60 | 156 | NSI | |||||
| AMRC14010 | 328248 | 6605136 | 332 | ‐60 | 225 | 126 | 109 | 110 | 1.0 | 0.3 | ||
| Pegasus Resource Drilling | ||||||||||||
| Drill Hole # | Easting (Local Grid) |
Northing (Local Grid) |
Drill Hole Collar RL (Local Grid) |
Dip (Degrees) |
Azimuth (Degrees, Local Grid) |
End of Hole Depth |
Downhole From(m) |
Downhole To(m) |
Downhole Intersection (m) |
Au (gpt) uncut |
Est True Thickness (m) |
Comments |
| PGDD14001 | 9665 | 17177 | 6345 | ‐63 | 79 | 416.7 | 115.6 | 116.4 | 0.8 | 49.2 | 0.6 | New structure? |
| 193.7 | 202.2 | 8.5 | 4.2 | 6.4 | Pode/K2B | |||||||
| 369.0 | 372.0 | 3.0 | 2.6 | 2.3 | Silicified sediments zone between victorias basalt and shale | |||||||
| 380.2 | 381.4 | 1.2 | 19.5 | 0.9 | K2 | |||||||
| PGDD14002 | 9602 | 17376 | 6345 | ‐60 | 92 | 498.2 | 411.0 | 412.9 | 1.9 | 2.6 | 1.4 | K2 |
| PGCD14003 | 9487 | 17389 | 6345 | ‐66 | 90 | 750.0 | Waitingto beprocessed. | |||||
| PGDD14004 | 9494 | 17229 | 6347 | ‐59 | 94 | 597.2 | 62.9 | 65.7 | 2.8 | 3.8 | 2.1 | |
| 290.9 | 293.0 | 1.1 | 15.7 | 0.8 | Pode | |||||||
| 533.4 | 536.0 | 2.6 | 4.9 | 2.0 | ||||||||
| 562.2 | 563.1 | 0.9 | 5.2 | 0.6 | K2 | |||||||
| PGCD14005 | 9448 | 17224 | 6346 | ‐61 | 94 | 672.0 | 113.0 | 123.0 | 10.0 | 2.3 | 7.5 | Pre‐collar results only |
| PGCD14006 | 9502 | 17051 | 6345 | ‐65 | 91 | Pre‐collar drilled only | ||||||
| PGCD14007 | 9511 | 16915 | 6344 | ‐65 | 96 | Pre‐collar drilled only | ||||||
| PGDD14008 | 9671 | 17259 | 6344 | ‐70 | 79 | 456.0 | 187.8 | 192.1 | 4.3 | 1.5 | 3.2 | Pode |
| 419.7 | 420.9 | 1.2 | 4.9 | 0.9 | K2 | |||||||
| PGDD14009 | 9645 | 17129 | 6345 | ‐63 | 90 | 452.3 | 205.3 | 208.2 | 2.9 | 3.9 | 2.2 | Pode |
| 402.6 | 411.6 | 9.0 | 37.8 | 6.8 | K2 | |||||||
| PGDD14010A | 9690 | 16976 | 6345 | ‐62 | 90 | 89.6 | 191.6 | 194.9 | 3.3 | 2.7 | 2.5 | K2B |
| 200.0 | 202.0 | 2.0 | 3.9 | 1.5 | K2B | |||||||
| 343.0 | 345.6 | 2.6 | 9.5 | 2.0 | K2 | |||||||
| PGDD14011 | 9730 | 17011 | 6345 | ‐62 | 90 | 336.0 | 155.0 | 157.0 | 2.0 | 3.5 | 1.5 | K2B, Includes 0.4m of core loss |
| 292.8 | 294.0 | 1.2 | 4.7 | 0.9 | K2 |
6
| Pegasus Resource Drilling | Pegasus Resource Drilling | Pegasus Resource Drilling | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Hole # | Easting (Local Grid) |
Northing (Local Grid) |
Drill Hole Collar RL (Local Grid) |
Dip (Degrees) |
Azimuth (Degrees, Local Grid) |
End of Hole Depth |
Downhole From(m) |
Downhole To(m) |
Downhole Intersection (m) |
Au (gpt) uncut |
Est True Thickness (m) |
Comments |
| PGDD14012 | 9573 | 17069 | 6348 | ‐59 | 90 | 555.0 | Waiting results | |||||
| PGDD14013 | 9723 | 17124 | 6345 | ‐62 | 89 | 321.0 | 142.2 | 147.0 | 4.8 | 3.1 | 3.6 | K2B |
| 285.6 | 286.0 | 0.4 | 6.1 | 0.3 | K2 | |||||||
| PGRC14014 | 9792 | 17099 | 6348 | ‐63 | 90 | 222.0 | 42.0 | 43.0 | 1.0 | 4.8 | 0.8 | |
| 196.0 | 198.0 | 2.0 | 4.5 | 1.5 | K2 | |||||||
| PGRC14015 | 9787 | 17143 | 6347 | ‐63 | 90 | 240.0 | 208.0 | 214.0 | 6.0 | 1.7 | 4.5 | K2 |
| PGRC14016 | 9798 | 17238 | 6345 | ‐63 | 90 | 204.0 | NSI | |||||
| PGDD14017 | 9713 | 17193 | 6344 | ‐62 | 85 | 336.0 | Waitingto beprocessed. | |||||
| PGDD14018 | 9803 | 17165 | 6346 | ‐63 | 90 | 213.0 | Waitingto beprocessed. | |||||
| PGDD14019 | 9567 | 16992 | 6343 | ‐63 | 90 | 141.0 | Waiting to be processed, hole deviated and was stopped and redrilled as PGDD14028 |
|||||
| PGCD14020 | 9506 | 17467 | 6348 | ‐67 | 90 | Pre‐collar drilled only | ||||||
| PGCD14021 | 9530 | 17426 | 6343 | ‐65 | 90 | 637.7 | Waitingto beprocessed. | |||||
| PGCD14022 | 9558 | 17341 | 6346 | ‐65.5 | 90 | 564.0 | Waitingto beprocessed. | |||||
| PGCD14023 | 9519 | 17255 | 6350 | ‐62 | 86 | Pre‐collar drilled only | ||||||
| PGCD14024 | 9546 | 17124 | 6347 | ‐65.5 | 91 | Pre‐collar drilled only | ||||||
| PGCD14025 | 9534 | 16962 | 6345 | ‐63 | 90 | Pre‐collar drilled only | ||||||
| PGCD14026 | 9567 | 16842 | 6345 | ‐61 | 88 | Pre‐collar drilled only | ||||||
| PGCD14027 | 9566 | 16842 | 6345 | ‐63.5 | 91 | Pre‐collar drilled only | ||||||
| PGDD14028 | 9566 | 16991 | 6343 | ‐63 | 90 | 597.0 | Waitingto beprocessed. | |||||
| PGDD14029 | 9586 | 17128 | 6343 | ‐64.5 | 90 | 552.0 | Waitingto beprocessed. |
Note: Local grid is the Kundana 10 grid.
7
Figure 3. Pegasus Long Projection
==> picture [955 x 515] intentionally omitted <==
----- Start of picture text -----
6200RL 6200RL
6000RL
6000RL
5800RL
----- End of picture text -----
8
3 ASSAY QAQC
Overall laboratory performance for these jobs was good with none of the submitted company standards and one laboratory standards falling outside of +/- 3 standard deviations out of and only three warnings for outside 2 standard deviations (Table 2). Two blanks failed, both relating to a swap of material for a screen fire assay (decision on appropriate response pending). One lab standard failed in January, and four other lab standards reported warnings outside 2 standard deviations over 3 month reporting period. No lab blanks were above 0.05 g/t gold.
All grind checks passed at both the 3mm (113 samples) and 75µm (198 samples) levels.
Repeatability for the reporting period was slightly poorer than for the previous reporting period. There is a slight bias towards higher grades in the original compared to repeat (LR1, LR2, LR3) assays, however, this is an artefact related to the lab procedure for selection of repeat samples which selectively targets the top percentile of assays in the original data. (high values that come back low are repeated, but low values that would have come back higher are not selected). There were insufficient field duplicate samples to undertake any meaningful analysis.
Table 2. Summary of controls for 50 g Fire Assay Jobs received for the reporting period
| STANDARDID | Total Returned | Sum of Warm | Sum of Fail | %Fail |
|---|---|---|---|---|
| BLANK | 266 | 3 | 2 | 0.75% |
| ControlBlank | 85 | 0 | 0 | 0.00% |
| G310‐10 | 46 | 0 | 0 | 0.00% |
| G310‐4 | 1 | 0 | 0 | 0.00% |
| G900‐5 | 10 | 0 | 0 | 0.00% |
| G900‐7 | 19 | 0 | 0 | 0.00% |
| G901‐8 | 21 | 0 | 0 | 0.00% |
| G904‐1 | 42 | 1 | 0 | 0.00% |
| G909‐1 | 24 | 0 | 0 | 0.00% |
| G909‐3 | 19 | 0 | 0 | 0.00% |
| G910‐5 | 56 | 0 | 0 | 0.00% |
| G912‐5 | 52 | 2 | 0 | 0.00% |
| Total NSR Standards |
290 | 3 | 0 | 0.00% |
| OxD107 | 51 | 1 | 0 | 0.00% |
| Oxi96 | 46 | 2 | 1 | 2.17% |
| OxP91 | 57 | 2 | 0 | 0.00% |
| ST463 | 53 | 0 | 0 | 0.00% |
| ST517 | 55 | 0 | 0 | 0.00% |
| OxC109 | 6 | 0 | 0 | 0.00% |
| OxG84 | 10 | 0 | 0 | 0.00% |
| ST502 | 1 | 0 | 0 | 0.00% |
| OxC102 | 1 | 0 | 0 | 0.00% |
| Total Genalysis Stds | 280 | 5 | 1 | 0.36% |
| Total Standards and Blanks |
921 | 11 | 3 | 0.33% |
9
Table 3. Summary of lab repeats (LR1, LR2, LR3), pulp duplicates (LS1) and field duplicates (DUP)
| **Where Original assay >0.05g/t ** | **Where Original assay >0.05g/t ** | ||
|---|---|---|---|
| **Repeat Type ** | Number Submitted | # outside +/‐ 10% | # outside +/‐20% |
| LR1 LR2 LR3 |
326 139 33 |
41 (13%) 78 (56%) 27(82%) |
25 (8%) 50 (36%) 22(67%) |
| Repeats Total | 498 | 146(29%) | 97(19%) |
| LS1 418 DUP 70 |
52 (12%) 34 (8%) 10(14%) 5(7%) |
Competency Statement
The information in this report relating to Exploration Results and Mineral Resources is based on information compiled by Mr Glenn Grayson who is a Member of the Australian Institute of Mining and Metallurgy and has sufficient exploration experience which is relevant to the style of mineralisation under consideration 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 Grayson is a full time employee of Northern Star Resource Ltd and consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
10
Table 4. 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 techniques |
Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma |
Sampling was completed using a combination of Reverse circulation (RC) and Diamond Drilling (DD). RC drilling was used to drill pre- collars for many of the Resource definition holes with diamond tails. |
| sondes, or handheld XRF instruments, etc). These examples should | Diamond drilling constitutes the rest of the drilling. | |
| not be taken as limiting the broad meaning of sampling. | Diamond core was transferred to core trays for logging and sampling. | |
| Include reference to measures taken to ensure sample representivity | Half core samples were nominated by the geologist from both NQ and | |
| and the appropriate calibration of any measurement tools or systems | HQ diamond core, with a minimum sample width of either 20cm (HQ) | |
| used. | or 30cm (NQ). | |
| Aspects of the determination of mineralisation that are Material to the | RC samples were split using a rig-mounted cone splitter on 1m | |
| Public Report. | intervals to obtain a sample for assay. 4m Composite spear samples | |
| In cases where ‘industry standard’ work has been done this would be | were collected for most of each hole, with 1m samples submitted for | |
| relatively simple (eg ‘reverse circulation drilling was used to obtain 1 | areas of known mineralization or anomalism. | |
| m samples from which 3 kg was pulverised to produce a 30 g charge | Samples were taken to Genalyis Kalgoorlie for preparation by drying, | |
| for fire assay’). In other cases more explanation may be required, | crushing to <3mm, and pulverizing the entire sample to <75µm. 300g | |
| such as where there is coarse gold that has inherent sampling | Pulps splits were then dispatched to Genalysis Perth for 50g Fire | |
| problems. Unusual commodities or mineralisation types (eg | assay charge and AAS analysis. | |
| submarine nodules) may warrant disclosure of detailed information. | ||
| Drilling techniques |
Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other |
7 RC pre-collars were drilled followed by diamond tails. Pre-collar depth was to 180m or less if approaching known mineralization. RC Drilling was completed using a 5.75” drill bit, downsized to 5.25” at |
| type, whether core is oriented and if so, by what method, etc). | depth. | |
| On all other holes, diamond drilling was used from surface. HQ | ||
| (63.5mm) diameter core was drilled for all resource definition holes, | ||
| elsewhere both HQ and NQ (50.5mm) diameter core was drilled. | ||
| Core was orientated using the Reflex ACT Core orientation system. | ||
| Drill sample recovery |
Method of recording and assessing core and chip sample recoveries and results assessed. Measures taken to maximise sample recovery and ensure |
RC drilling contractors adjust their drilling approach to specific conditions to maximize sample recovery. Moisture content and sample recovery is recorded for each RC sample. No recovery issues |
| _representative nature of the samples. _ | were identified during2013 RC drilling. Recoverywaspoor at the |
11
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Whether a relationship exists between sample recovery and grade | very beginning of each hole, as is normal for this type of drilling in | |
| and whether sample bias may have occurred due to preferential | overburden. | |
| loss/gain of fine/coarse material. | For diamond drilling the contractors adjust their rate of drilling and | |
| method if recovery issues arise. All recovery is recorded by the | ||
| drillers on core blocks. This is checked and compared to the | ||
| measurements of the core by the geological team. Any issues are | ||
| communicated back to the drilling contractor. | ||
| Recovery was excellent for diamond core and no relationship | ||
| between grade and recovery was observed. For RC drilling, pre- | ||
| collars were ended before known zones of mineralization and | ||
| recovery was very good through any anomalous zones, so no issues | ||
| occurred. | ||
| Logging | Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate |
All diamond core is logged for Regolith, Lithology, veining, alteration, mineralisation and structure. Structural measurements of specific |
| Mineral Resource estimation, mining studies and metallurgical | features are also taken through oriented zones. All logging is | |
| studies. | quantitative where possible and qualitative elsewhere. A photograph | |
| Whether logging is qualitative or quantitative in nature. Core (or | is taken of every core tray. | |
| costean, channel, etc) photography. | RC sample chips are logged in 1m intervals. For the entire length of | |
| The total length and percentage of the relevant intersections logged. | each hole. Regolith, Lithology, alteration, veining and mineralisation | |
| are all recorded. | ||
| Sub‐sampling techniques and sample preparation |
If core, whether cut or sawn and whether quarter, half or all core taken. If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. For all sample types, the nature, quality and appropriateness of the |
All Diamond core is cut and half the core is taken for sampling. The remaining half is stored for later use. All RC samples are split using a rig-mounted cone splitter to collect a 1m sample 3-4kg in size. These samples were submitted to the lab from any zones approaching known mineralization and from any |
| sample preparation technique. | areas identified as having anomalous gold. Outside of mineralized | |
| Quality control procedures adopted for all sub-sampling stages to | zones spear samples were taken over a 4m interval for composite | |
| maximise representivity of samples. | sampling. | |
| Measures taken to ensure that the sampling is representative of the in | Field duplicates were taken for RC samples at a rate of 1 in 20 |
|
| situ material collected, including for instance results for field | Sample preparation was conducted at Genalysis Kalgoorlie, | |
| duplicate/second-half sampling. | commencing with sorting, checking and drying at less than 110°C to | |
| Whether sample sizes are appropriate to the grain size of the material | prevent sulphide breakdown. Samples are jaw crushed to a nominal - |
|
| being sampled. | 6mm particle size. If the sample is greater than 3kg a Boyd crusher | |
| with rotary splitter is used to reduce the sample size to less than 3kg | ||
| (typically 1.5kg) at a nominal <3mm particle size. The entire crushed | ||
| sample(if less than 3kg)or sub-sample is thenpulverized to 90% |
12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| passing 75µm, using a Labtechnics LM5 bowl pulveriser. 300g Pulp | ||
| subsamples are then taken with an aluminium scoop and stored in | ||
| labelled pulp packets. | ||
| Grind checks are performed at both the crushing stage(3mm) and | ||
| pulverising stage (75µm), requiring 90% of material to pass through | ||
| the relevant size. | ||
| 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. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument |
A 50g Fire assay charge is used with a lead flux, dissolved in the furnace. The prill is totally digested by HCl and HNO3 acids before Atomic absorption spectroscopy (AAS) determination for gold analysis. No geophysical tools were used to determine any element |
| make and model, reading times, calibrations factors applied and their | concentrations | |
| derivation, etc. | Certified reference materials (CRMs) are inserted into the sample | |
| Nature of quality control procedures adopted (eg standards, blanks, | sequence randomly at a rate of 1 per 20 samples to ensure correct | |
| duplicates, external laboratory checks) and whether acceptable levels | calibration. Any vaules outside of 3 standard deviations are re- |
|
| of accuracy (ie lack of bias) and precision have been established. | assayed with a new CRM. | |
| Blanks are inserted into the sample sequence at a rate of 1 per 20 | ||
| samples, This is random, except where high grade mineralisation is | ||
| expected. Here, a Blank is inserted after the high grade sample to | ||
| test for contamination. Failures above 0.2g/t are followed up, and re- | ||
| assayed. New pulps are prepared if failures remain. | ||
| Field Duplicates are taken for all RC samples (1 in 20 sample). No | ||
| Field duplicates are submitted for diamond core. | ||
| Verification of sampling and assaying |
The verification of significant intersections by either independent or alternative company personnel. The use of twinned holes. Documentation of primary data, data entry procedures, data |
All significant intersections are verified by another geologist during the drill hole validation process, and later by a Competent person to be signed off No Twinned holes were drilled for this data set |
| verification, data storage (physical and electronic) protocols. | Geological logging was captured using excel templates. Both a | |
| Discuss any adjustment to assay data. | hardcopy and electronic copy of these are stored, as well as being | |
| loaded in to the database using automatic acquire loaders. Assay | ||
| files are received in csv format and loaded directly into the database | ||
| by the Database administrator (DBA). A geologist then checks that | ||
| the results have inserted correctly. Hardcopy and electronic copies of | ||
| these are also kept. No adjustments are made to this assay data. | ||
| Location of | Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations |
A planned hole is pegged using a Differential GPS by the field assistants |
13
| Criteria | JORC Code explanation | Commentary | |
|---|---|---|---|
| data points | used in Mineral Resource estimation. | During drilling single-shot surveys are every 30m to ensure the hole | |
| Specification of the grid system used. | remains close to design. This is performed using the Reflex Ez-Trac | ||
| Quality and adequacy of topographic control. | system. Upon hole completion, a Gyroscopic survey is conducted by | ||
| ABIMS, taking readings every 5m for improved accuracy. This is done | |||
| in true north. | |||
| The final collar is picked up after hole completion by Differential GPS | |||
| in the MGA 94_51 grid. | |||
| Good quality topographic control has been achieved through Lidar | |||
| data and survey pickups of holes over the last 15 years. | |||
| Data spacing and distribution |
Data spacing for reporting of Exploration Results. 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 |
Drillhole spacing across the area varies. For the Resource definition drilling, spacing was typically 40m x 40m, to allow the resource to be upgraded to indicated. For the Pode drilling spacing was approximately 20m x 20m. The HRPD drilling was mich more wide |
|
| classifications applied. | spaced, as this is largely unclassified. Spacing is wider than 160m in | ||
| Whether sample compositing has been applied. | some areas. | ||
| No compositing has been applied to these exploration results, | |||
| although composite intersections are reported. | |||
| 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. If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a |
The majority of the structures in the Kundana camp dip steeply (80°) to WSW. The Pode structure has a much shallower dip in a similar direction, approximately 60° . To target these orientations the drillhole dips of 60-70° towards ~060° achieve high angle intersections on all structures. |
|
| sampling bias, this should be assessed and reported if material. | No sampling bias is considered to have been introduced by the | ||
| drilling orientation | |||
| Sample security |
The measures taken to ensure sample security. | Prior to laboratory submission samples are stored by Barrick Kanowna in a secure yard. Once submitted to the laboratories they are stored in a secure fenced compound, and tracked through their |
|
| chain of custody via audit trails | |||
| Audits reviews |
or | The results of any audits or reviews of sampling techniques and data. | No audits or reviews have recently been conducted on sampling techniques. |
14
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral tenement and land tenure status |
Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. The security of the tenure held at the time of reporting along with any |
All holes mentioned in this report are located within the M16/309 and M16/326 Mining leases and are held by The East Kundana Joint Venture (EKJV). The EKJV is majority owned and managed by Northern Star Resources Ltd (51%) purchased from Barrick Gold Corporation on February 28, 2014. The minority holding in the EKJV |
| known impediments to obtaining a licence to operate in the area. | is held by Tribune Resources Ltd (36.75%) and Rand Mining Ltd | |
| (12.25%). | ||
| The tenement on which the Pegasus deposit is hosted (M16/309) is | ||
| subject to two royalty agreements; however neither of these is | ||
| applicable to the actual Pegasus deposit. The agreements that are on | ||
| M16/309 but not relevant to the Pegasus project are the Kundana- | ||
| Hornet Central Royalty and the Kundana Pope John Agreement No. | ||
| 2602-13. | ||
| No known impediments exist and the tenements are in good standing | ||
| Exploration done by other parties |
Acknowledgment and appraisal of exploration by other parties. |
The first reference to the mineralization style encountered at the Pegasus project was the mines department report on the area produced by Dr. I. Martin (1987). He reviewed work completed in 1983 – 1984 by a company called Southern Resources, who |
| identified two geochemical anomalies, creatively named Kundana #1 | ||
| and Kundana #2. The Kundana #2 prospect was subdivided into a | ||
| further two prospects, dubbed K2 and K2A. | ||
| Between 1987 and 1997, limited work was completed. | ||
| Bewteen 1997 and 2006 Tern Resources (subsequently Rand Mining | ||
| and Tribune Resources), and Gilt-edged mining focused on shallow | ||
| open pit potential which was not considered viable. | ||
| In 2011, Pegasus was highlighted by an operational review team and | ||
| follow-up drilling was planned through 2012. | ||
| This report is concerned solely with 2013 drilling that led on from this | ||
| period. | ||
| Geology | Deposit type, geological setting and style of mineralisation. | The Kundana camp is situated within the Norseman-Wiluna Greenstone Belt, in an area dominated by the Zuleika shear zone, |
| which separates the Coolgardie domain from the Ora Banda domain. | ||
| K2-style mineralisation(Pegasus,Rubicon,Hornet)consists of |
15
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| narrow vein deposits hosted by shear zones located along steeply- | ||
| dipping overturned lithological contacts. The K2 structure is present | ||
| along the contact between a black shale unit (Centenary shale) and | ||
| intermediate volcaniclastics (Sparogville formation). | ||
| Minor mineralization, termed K2B, also occurs further west, on the | ||
| contact between the victorious basalt and Bent Tree Basalt (both part | ||
| of the regional upper Basalt Sequence). | ||
| A 60° W dipping fault, offsets this contact and exists as a zone of | ||
| vein-filled brecciated material hosting the Pode-style mineralisation. | ||
| Drill hole Information |
A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: |
Significant intercepts that form the basis of this Resource estimate have been released to the ASX in previous announcements by Tribune Resources and Rand Mining, with appropriate tables |
o easting and northing of the drill hole collar |
incorporating Hole ID, Easting, Northing, Dip, Azimuth, Depth and | |
o elevation or RL (Reduced Level – elevation above sea level in |
assay data of mineralised intervals. Appropriate maps and plans also | |
| metres) of the drill hole collar | accompany all previous exploration announcements. | |
o dip and azimuth of the hole |
||
o down hole length and interception depth |
||
o hole length. |
||
| If the exclusion of this information is justified on the basis that the | ||
| information is not Material and this exclusion does not detract from the | ||
| understanding of the report, the Competent Person should clearly | ||
| _explain why this is the case. _ | ||
| Data aggregation methods |
In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated. Where aggregate intercepts incorporate short lengths of high grade |
All reported assay results have been length weighted to provide an intersection width. A maximum of 2m of barren material between mineralized samples has been permitted in the calculation of these widths. |
| results and longer lengths of low grade results, the procedure used for | No assay results have been top-cut for the purpose of this report. A | |
| such aggregation should be stated and some typical examples of such | lower cut-off of 1g/t has been used to indentify significant results, | |
| aggregations should be shown in detail. | although lower results are included as internal dilution where a known | |
| The assumptions used for any reporting of metal equivalent values | ore zone has been intercepted | |
| should be clearly stated. | No metal equivalent values have been used for the reporting of these | |
| exploration results | ||
| Relationship between mineralisation widths and |
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. |
True widths have been calculated for intersections of the known ore zones, based on existing knowledge of the nature of these structures. Both the downhole width and true width have been clearly specified when used. |
16
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| intercept | If it is not known and only the down hole lengths are reported, there | |
| lengths | should be a clear statement to this effect (eg ‘down hole length, true | |
| _width not known’). _ | ||
| Diagrams | Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being |
Appropriate plans and section have been included in the body of this report |
| reported These should include, but not be limited to a plan view of drill | ||
| _hole collar locations and appropriate sectional views. _ | ||
| Balanced reporting |
Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of |
Both high and low grades have been reported accurately, clearly identified with the drillhole attributes and ‘From’ and ‘To’ depths. |
| _Exploration Results. _ | ||
| Other substantive exploration data |
Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential |
Metallurgical testwork was conducted on 9 Pegasus samples. The results are summarized as follows: ・All Pegasus recoveries were above 91% for the leach tests ・Gravity gold recovery estimated at 55% |
| deleterious or contaminating substances. | ・Cyanide consumption 0.62 kg/t; Lime 2.29 kg/t | |
| ・Oxygen Consumption 60 g/t per hour | ||
| ・Bond Ball mill work index average 18.1 kWh/t | ||
| ・Bond Abrasion Index average 0.1522 | ||
| Further work | The nature and scale of planned further work (eg tests for lateral extensions or depth extensions or large-scale step-out drilling). |
Further work will commence in 2014 to extend the indicated resource deeper by infill drilling. Advanced exploration work will also attempt to |
| Diagrams clearly highlighting the areas of possible extensions, | upgrade an area at depth spanning 1km of strike to an inferred | |
| including the main geological interpretations and future drilling areas, | resource. The continuation of the ‘HRPD’ trend will continue to be drill | |
| provided this information is not commercially sensitive. | tested at depth, with the intention of linking the known deposits of | |
| Hornet, Rubicon, Pegasus and Drake. |
17