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RAMELIUS RESOURCES LIMITED — Capital/Financing Update 2016
May 8, 2016
65718_rns_2016-05-08_6fc33de2-9587-499c-82a8-d0ac9fbd118f.pdf
Capital/Financing Update
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9 May 2016 For Immediate Release
Maiden 241,000oz Milky Way Resource - Mt Magnet, WA
Highlights
-
Maiden Mineral Resource of 5.99 Mt @ 1.3 g/t Au for 241,000oz
-
Potential for large tonnage open pit operation at Mt Magnet
-
Further in-fill and step-out RC drilling underway
-
Mining studies to commence immediately
Ramelius Resources Limited (ASX:RMS) is pleased to announce its maiden Mineral Resource estimate for the Milky Way gold deposit, 3.6km from the processing plant at Mt Magnet in Western Australia (refer Figures 1 & 2);
- Total Mineral Resource is estimated at 5.99 Mt @ 1.3 g/t Au for 241,000 contained ounces (using a 0.7g/t Au cut-off)
The new resource estimate was independently generated by Resource consultants, Optiro Pty Ltd, following recent drilling programmes conducted by Ramelius in late 2015 and early 2016. Mineral Resource details are shown in Table 1 below.
Initial scoping work suggests a viable open pit operation and more detailed evaluation will now commence, including pit optimisation, metallurgical test work and assessment of statutory approval requirements.
Ramelius Managing Director, Mark Zeptner today said:
“In what is a great credit to our exploration team, this maiden Milky Way resource has the potential to provide a significant base load ore source and deliver a quantum shift in our overall Mt Magnet life-of-mine plans. It provides further evidence that the potential of the porphyry based deposits at Mt Magnet is significant”.
“Further depth drill testing, evaluation, design and permitting work on the project together with aggressive forward exploration programs in the area will continue over the next Quarter. We aim to generate an Ore Reserve for Milky Way during this period and delivering additional exploration success in adjacent areas where we have already had some very encouraging drill intersections”.
For further information contact: Mark Zeptner Managing Director Ramelius Resources Ltd Ph: +61 8 9202 1127
Duncan Gordon Executive Director Adelaide Equity Partners Ph: +61 8 8232 8800
ABOUT RAMELIUS
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Figure 1: Ramelius’ Operations & Development Project Locations
Ramelius owns 100% of the Mt Magnet gold mine and associated processing plant in Western Australia. The Company has commenced production from the high grade Vivien and Kathleen Valley gold mines near Leinster, also in Western Australia. The Burbanks Treatment Plant is located approximately 9 kilometres south of Coolgardie and is currently on care and maintenance.
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Milky Way Gold Deposit
Milky Way is located 6km west of Mt Magnet, and 4.8km (by road) from the Company’s “Checker” Processing Plant.
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Figure 2: Milky Way Location
The deposit is located on the 100% owned Mining lease, M58/136. The existing 67m deep, Milky Way pit was mined in 1999 to 2000 by Mt Magnet Gold (WMC) and produced 626,723 t @ 1.64 g/t for 33,073 oz.
Gold mineralisation occurs as stockwork style of sericite-silica-pyrite veining and alteration within a thick altered felsic porphyry unit intruded into ultramafic flow sequences. Mineralisation forms high grade zones within a broader low grade stockwork. Higher grade gold mineralisation tends to occur along the eastern margin of the felsic (trending 015° to 030°), adjacent to the ultramafic contact along the trace of the vertical dipping Milky Way Fault, oblique to the overall dip of the porphyry at around 65° to 75°. Within the HW ultramafic a number of narrow felsic units are intercalated and are frequently mineralised.
Mineral Resource
The Mineral Resource was generated in April 2016 and is summarised below:
Table 1: Milky Way Mineral Resource (>0.7g/t)
| Resource Category | Tonnes Grade Au (oz) |
|---|---|
| Indicated Inferred |
4,096,000 1.3 165,000 1,898,000 1.2 76,000 |
| Total | 5,994,000 1.3 241,000 |
Note: Figures rounded to nearest 1,000 tonnes, 0.1g/t and 1,000 ounces. Rounding errors may occur.
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Mineral Resource Commentary
Interpretation and estimation was carried out using all available drilling data. Historic drilling included 409 surface exploration RC holes and 2,450 grade control RC holes. Three hundred and fifty two (352) RAB & Aircore holes were included in the dataset, however these are largely outside the immediate pit, above the mined pit surface or relatively shallow and generally do not influence the resource significantly. Eight historic diamond holes were included. The majority of this drilling was carried out by WMC in the mid to late 1990’s or during mining of the previous Milky Way pit in 1999-2000.
Ramelius drilled a further 61 RC holes (10,296m) and one diamond hole (202m) in late 2015 and early 2016. Drill spacing ranges from high density grade control (8m x 5m), within and immediately below the base of the mined pit, to nominal 25m by 25m in upper areas, to 50m by 50m spacing at depth. New holes were accompanied by appropriate QAQC measures and often form a check of earlier drilling data. All RC holes were logged and sampled on 1m intervals. RC samples were assayed by fire assay at a commercial Perth laboratory. Hole collars were surveyed by DGPS, with downhole surveys by gyro and magnetic tools.
Ramelius engaged recognised industry resource consultants, Optiro Pty Ltd, to assist with the geological modelling and grade estimation. Geological modelling was carried out using Leapfrog software to interpret the main felsic host unit and the complex hangingwall felsic/ultramafic interfingering. The grade domain was further subdivided by weathering. The resultant domains were composited to 1m intervals and topcut to 20 g/t Au. A 5m x 10m x 5m parent block size was used.
Resources are reported above a 0.7 g/t Au lower cut-off, which is near the current estimated economic cut-off for the minesite. Resources have been generated for evaluation by open-pit mining methods. Indicated resources are reported to a maximum depth of 150m and Inferred to 200m. Density values are based on established Mt Magnet values and measurements from the diamond drill core. Initial basic metallurgical tests (bottle rolls) have been conducted and return typical Mt Magnet recovery values. Grade–tonnage figures for various grade cut-offs are shown in Table 2 below;
Table 2: Grade – Tonnage Figures
| lower cutoff |
Indicated t g/t oz |
Inferred t g/t oz |
Total t g/t oz |
|---|---|---|---|
| >0.5g/t >0.7g/t >0.9g/t |
5,897,000 1.1 200,000 4,096,000 1.3 165,000 2,636,000 1.5 128,000 |
2,830,000 1.0 94,000 1,898,000 1.2 76,000 1,277,000 1.5 60,000 |
8,727,000 1.0 294,000 5,994,000 1.3 241,000 3,913,000 1.5 188,000 |
Detailed Resource information is given in the JORC Table 1 attachment below.
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Figure 3: Plan view showing new RMS drillholes & geology
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Figure 4: Oblique cross section 300° north pit – drilling & geology model. High grade gold mineralisation is shown to lie along the trace of the Milky Way Fault (vertical black line in Figures 4,5 and 6) and will the focus of deeper drilling over the next Quarter.
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Figure 5: Oblique cross section 300° mid pit – grade model & drilling (RMS holes labelled). Deeper drilling is required to extend the known high grade gold mineralisation down dip along the Milky Way Fault (vertical black line).
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Figure 6: Oblique cross section 300° south end of pit – grade model & drilling (RMS holes labelled)
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Figure 7: 3D sliced view to North – Resource model, Au > 0.8g/t
Competent Person
The information in this report that relates to Mineral Resources is based on information compiled by Rob Hutchison, a Member of the Australasian Institute of Mining and Metallurgy. Rob Hutchison has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity he is undertaking 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’. Rob Hutchison is a full‐time employee of the company and 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 report contains forward looking statements. The forward looking statements are based on current expectations, estimates, assumptions, forecasts and projections and the industry in which it operates as well as other factors that management believes to be relevant and reasonable in the circumstances at the date such statements are made, but which may prove to be incorrect. The forward looking statements relate to future matters and are subject to various inherent risks and uncertainties. Many known and unknown factors could cause actual events or results to differ materially from the estimated or anticipated events or results expressed or implied by any forward looking statements. Such factors include, among others, changes in market conditions, future prices of gold and exchange rate movements, the actual results of production, development and/or exploration activities, variations in grade or recovery rates, plant and/or equipment failure and the possibility of cost overruns. Neither Ramelius, its related bodies corporate nor any of their directors, officers, employees, agents or contractors makes any representation or warranty (either express or implied) as to the accuracy, correctness, completeness, adequacy, reliability or likelihood of fulfilment of any forward looking statement, or any events or results expressed or implied in any forward looking statement, except to the extent required by law.
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Appendix A – JORC Table 1 Criteria Milky Way Gold Deposit
Section 1 Sampling Techniques and Data
| Criteria | JORC Code explanation | JORC Code explanation | JORC Code explanation | Commentary |
|---|---|---|---|---|
| Sampling | • | Nature and quality of sampling (e.g. | •Sampled by RC drilling with samples collected | |
| techniques | cut channels, random chips, or | as 1m samples and sub-sampled using a riffle or | ||
| specific specialised industry standard | cone splitter to produce≈3kg sub-samples. | |||
| measurement tools appropriate to the | Drillhole locations were designed to cover the | |||
| minerals under investigation, such as | spatial extents of the interpreted mineralisation. | |||
| down hole gamma sondes, or | •Drill hole locations were designed to allow for | |||
| handheld XRF instruments, etc). | spatial spread across the interpreted mineralised | |||
| These examples should not be taken | zone. | |||
| as limiting the broad meaning of | •Standard fire assaying was employed using a | |||
| sampling. | 50gm charge with an AAS finish. Trace element | |||
| • | Include reference to measures taken | determination was undertaken using a multi (4) | ||
| to ensure sample representivity and | acid digest and ICP- AES finish. | |||
| the appropriate calibration of any | •A significant proportion of sampling data comes | |||
| measurement tools or systems used. | from historical information generated by Mt | |||
| • | Aspects of the determination of | Magnet Gold (a WMC subsidiary) in the late | ||
| mineralisation that are Material to the | 1990’s, prior to open pit mining of the existing | |||
| Public Report. | Milky Way pit. Detailed methodology and QAQC | |||
| 6 January 2015 • In cases where ‘industry standard’ work has been done this would be |
information is generally lacking for this data, however it appears to meet industry standards |
|||
| relatively simple (e.g. ‘reverse | of the period and new drilling in 2014/15 by | |||
| circulation drilling was used to obtain | Ramelius (RMS) comprising of 61 RC holes for | |||
| 1 m samples from which 3 kg was | 10,296m shows good agreement with previous | |||
| ISSUED CAPITAL | pulverised to produce a 30 g charge | information. | ||
| for fire assay’). In other cases more | ||||
| Ordinary Shares: | 468M explanation may be required, such as |
|||
| where there is coarse gold that has | ||||
| inherent sampling problems. Unusual | ||||
| commodities or mineralisation types | ||||
| DIRECTORS | (e.g. submarine nodules) may warrant | |||
| disclosure of detailed information. | ||||
| CHAIRMAN: Robert Kennedy NON-EXECUTIVEDIRECTORS: Drilling techniques • Drill type (e.g. core, reverse circulation, open-hole hammer, rotary |
•RC Drilling was completed using best practice 5 ¾” face sampling RC drilling hammers for all drill |
|||
| Kevin Lines Michael Bohm CHIEFEXECUTIVE Mark Zeptner |
OFFICER: air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, |
programmes. •Historical RAB & Aircore drilling was completed within the upper laterite and saprolite zones. •A small number of Diamond Core drillholes were |
||
| whether core is oriented and if so, by | completed. One new NQ hole was completed by | |||
| _what method, etc). _ | Ramelius(RMS)in 2016. | |||
| Drill sample | • | Method of recording and assessing | •Bulk RC drill holes samples were visually | |
| recovery | core and chip sample recoveries and | inspected by the supervising geologist to ensure | ||
| results assessed. | adequate clean sample recoveries were | |||
| • | Measures taken to maximise sample | achieved. Any wet, contaminated or poor | ||
| recovery and ensure representative | sample returns are flagged and recorded in the | |||
| nature of the samples. | database to ensure no sampling bias is | |||
| • | Whether a relationship exists between | introduced. |
||
| sample recovery and grade and | •Zones of poor sample return are recorded in the | |||
| whether sample bias may have | database and cross checked once assay results | |||
| occurred due to preferential loss/gain | are received from the laboratory to ensure no | |||
| of fine/coarse material. | misrepresentation of sampling intervals has | |||
| occurred. Excellent RC drill recovery is reported | ||||
| from all RC holes. | ||||
| •No indication of sample bias is evident or has | ||||
| beenestablished | ||||
| Logging | • | Whether core and chip samples have | •All RC drill samples are geologically logged on | |
| beengeologically andgeotechnically | site byRMSgeologists. Details on the host |
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| logged to a level of detail to support | lithologies, deformation, dominant minerals | |
|---|---|---|
| appropriate Mineral Resource | including sulphide species and alteration | |
| estimation, mining studies and | minerals plus veining are recorded relationally | |
| metallurgical studies. | (separately). | |
| • Whether logging is qualitative or | •Drillhole logging of RC chips is qualitative on | |
| quantitative in nature. Core (or | visual recordings of rock forming minerals and | |
| costean, channel, etc) photography. | estimates of mineral abundance. | |
| • The total length and percentage of the | •The entire length of drillholes are geologically |
|
| relevant intersections logged. | logged | |
| Sub- | • If core, whether cut or sawn and | •Duplicate samples are collected every 25th |
| sampling | whether quarter, half or all core taken. | sample from the RC chips. |
| techniques | • If non-core, whether riffled, tube | •Dry RC 1m samples are riffle split to 3-4kg as |
| and sample | sampled, rotary split, etc and whether | drilled and dispatched to the laboratory. Any |
| preparation | sampled wet or dry. | wet samples are recorded in the database as |
| • For all sample types, the nature, | such and allowed to dry before splitting and | |
| quality and appropriateness of the | dispatching to the laboratory. | |
| sample preparation technique. | •All samples are pulverised prior to splitting in the | |
| • Quality control procedures adopted for | laboratory to ensure homogenous samples with |
|
| all sub-sampling stages to maximise | 85% passing 75um. 200gm is extracted by | |
| representivity of samples. | spatula that is used for the 50gm charge on | |
| • Measures taken to ensure that the | standard fire assays. | |
| sampling is representative of the in | •RC samples submitted to the laboratory are | |
| situ material collected, including for | sorted and reconciled against the submission | |
| instance results for field | documents. In addition to duplicates a high | |
| duplicate/second-half sampling. | grade or low grade standard is included every | |
| • Whether sample sizes are appropriate | 25thsample, a controlled blank is inserted every |
|
| to the grain size of the material being | 100thsample. The laboratory uses their own | |
| sampled. | internal standards and duplicates to ensure | |
| quality control is maintained. | ||
| •The sample size is considered appropriate for | ||
| the type, style, thickness and consistency of | ||
| mineralisation. | ||
| Quality of assay data |
• The nature, quality and appropriateness of the assaying and |
•The fire assay method is designed to measure the total gold in the sample. The technique |
| and | laboratory procedures used and | involves standard fire assays using a 50gm |
| laboratory | whether the technique is considered | sample charge with a lead flux (decomposed in |
| tests | partial or total. | the furnace). The prill is totally digested by HCl |
| • For geophysical tools, spectrometers, handheld XRF instruments, etc, the |
and HNO3acids before measurement of the gold content by AAS. |
|
| parameters used in determining the | •No field analyses of gold grades are completed. | |
| analysis including instrument make | Quantitative analysis of the gold content and | |
| and model, reading times, calibrations | trace elements is undertaken in a controlled |
|
| factors applied and their derivation, | laboratory environment. | |
| etc. | •Industry best practice is employed with the | |
| • Nature of quality control procedures | inclusion of duplicates and standards as | |
| adopted (e.g. standards, blanks, | discussed above, and used by Ramelius as well | |
| duplicates, external laboratory checks) | as the laboratory. All Ramelius standards and |
|
| and whether acceptable levels of | blanks are interrogated to ensure they lie within | |
| accuracy (i.e. lack of bias) and | acceptable tolerances. Additionally, sample | |
| precision have been established. | size, grind size and field duplicates are | |
| examined to ensure no bias to gold grades | ||
| exists. | ||
| Verification | • The verification of significant | •Alternative Ramelius personnel have inspected |
| of sampling | intersections by either independent or | the RC chips in the field to verify the correlation |
| and | alternative company personnel. | of mineralised zones between assay results and |
| assaying | • The use of twinned holes. | lithology, alteration and mineralisation. |
| • Documentation of primary data, data | •All holes are digitally logged in the field and all | |
| entry procedures, data verification, | primary data is forwarded to Ramelius’ | |
| data storage (physical and electronic) | Database Administrator (DBA) in Perth where it | |
| protocols. | is imported into Datashed. Assay data is | |
| • Discuss any adjustment to assay data. | electronicallymerged when received from the |
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| laboratory. The responsible project geologist | ||
|---|---|---|
| reviews the data in the database to ensure that it | ||
| is correct and has merged properly and that all | ||
| the drill data collected in the field has been | ||
| captured and entered into the database | ||
| correctly. | ||
| •The responsible geologist makes the DBA | ||
| aware of any errors and/or omissions to the | ||
| database and the corrections (if required) are | ||
| applied in the database immediately. | ||
| •No adjustments or calibrations are made to any | ||
| of the assaydata recorded in the database. | ||
| Location of data points |
• Accuracy and quality of surveys used to locate drill holes (collar and down- |
•Hole collars are picked up using accurate DGPS survey control. All downhole surveys are |
| hole surveys), trenches, mine | collected using downhole Gyro or digital | |
| workings and other locations used in | magnetic surveying techniques provided by the | |
| Mineral Resource estimation. | drilling contractors. | |
| • Specification of the grid system used. | •All holes are picked up in MGA94 – Zone 50 grid | |
| • Quality and adequacy of topographic | coordinates. | |
| control. | •Topographic control is of high quality and | |
| adequate accuracy. | ||
| Data spacing | • Data spacing for reporting of |
•Drillholes were planned on a nominal 25 - 50m |
| and | Exploration Results. | x 50m spacing to adequately cover the core |
| distribution | • Whether the data spacing and | mineralised zones. Drill locations however are |
| distribution is sufficient to establish the | partly restricted by the existing pit. Locations |
|
| degree of geological and grade | and drill orientations vary considerably to | |
| continuity appropriate for the Mineral | optimise coverage. | |
| Resource and Ore Reserve estimation | •This spacing is considered adequate to define |
|
| procedure(s) and classifications | the geological and grade continuity of | |
| applied. | mineralisation although actual spacings do vary | |
| • Whether sample compositing has | •No sampling compositing has been applied | |
| been applied. | within keymineralised intervals. | |
| Orientation | • Whether the orientation of sampling | •The drilling is generally drilled orthogonal to the |
| of data in | achieves unbiased sampling of | interpreted strike of the target horizon. However |
| relation to | possible structures and the extent to | a number of holes have varied directions. |
| geological structure |
which this is known, considering the deposit type. |
•No drilling orientation and/or sampling bias is evident |
| • 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. | ||
| Sample | • The measures taken to ensure sample | •All bagged RC samples are delivered from the |
| security | security. | field to the assay laboratory in Perth, whereupon |
| the laboratory checks the physically received | ||
| samples against Ramelius’ sample | ||
| submission/dispatch notes and confirmations | ||
| sent | ||
| Audits or | • The results of any audits or reviews of | •Sampling techniques and procedures are |
| reviews | sampling techniques and data. | reviewed prior to the commencement of new |
| work programmes to ensure adequate | ||
| procedures are in place to maximise the sample | ||
| collection and sample quality on new projects. | ||
| No external audits have been completed to date. |
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Section 2 Reporting of Exploration Results
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | • Type, reference name/number, | •The results presented in this report are on |
| tenement | location and ownership including | granted Mining Lease (ML) 58/136 (Mount |
| and land | agreements or material issues with | Magnet – Milky Way) owned 100% by Ramelius |
| tenure status | third parties such as joint ventures, | Resources Limited. The tenement is located on |
| partnerships, overriding royalties, | pastoral/grazing leases. | |
| native title interests, historical sites, | •At this time all the tenements are in good | |
| wilderness or national park and | standing. There are no known impediments to | |
| environmental settings. | obtaining a licence to operate in the area. | |
| • 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. | ||
| Exploration | • Acknowledgment and appraisal of | •Exploration by other parties has been reviewed |
| done by | exploration by other parties. | and is used as a guide to Ramelius’ exploration |
| other parties | activities. Previous parties have completed | |
| shallow RAB, Aircore, RC drilling and shallow | ||
| open pit mining at Milky Way plus geophysical | ||
| data collectionandinterpretation. | ||
| Geology | • Deposit type, geological setting and | •The mineralisation at Milky Way is typical of |
| style of mineralisation. | porphyry hosted orogenic structurally controlled | |
| Archaean gold lode systems. The mineralisation | ||
| is controlled by anastomosing shear zones | ||
| passing through competent rock units, brittle | ||
| fracture and stockwork mineralisation is | ||
| common in the competent porphyry rock. The | ||
| bedrock Milky Way mineralisation currently | ||
| extends over several hundred metre strike | ||
| length and dips steeply eastwards along the | ||
| eastern flank of the NE striking Milky Way | ||
| Porphyry. The plunge of the system is yet to be | ||
| determined. | ||
| Drill hole | • A summary of all information material | •All the drill holes reported in recent releases |
| Information | to the understanding of the | have been included the following information. |
| exploration results including a tabulation of the following information |
•All drillholes reported, including those with no significant results. |
|
for all Material drill holes:o easting and northing of the drill |
•Easting and northing in MGA94 coordinates •RL is AHD |
|
hole collaro elevation or RL (Reduced Level –elevation above sea level in metres) of the drill hole collar o dip and azimuth of the holeo down hole length and interceptiondepth o hole length.• If the exclusion of this information is justified on the basis that the information is not Material and this |
•Dip is the inclination of the hole from the horizontal. Azimuth is reported in magnetic degrees as the direction the hole is drilled. MGA94 and magnetic degrees vary by≈1°in the project area •Down hole length is the distance measured along the drill hole trace. Intersection length is the thickness of an anomalous gold intersection measured along the drill hole trace. •Hole length is the measured distance along the drill hole trace. |
|
| exclusion does not detract from the understanding of the report, the |
•No information is excluded | |
| Competent Person should clearly | ||
| explain why this is the case. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Data | • In reporting Exploration Results, | •Weighted average techniques are applied to |
| aggregation | weighting averaging techniques, | determine the grade of the anomalous interval |
| methods | maximum and/or minimum grade | when geological intervals less than 1m have |
| truncations (e.g. cutting of high | been sampled. | |
| grades) and cut-off grades are usually | •Gold intersections are nominally reported above |
|
| Material and should be stated. | 0.5g/t, but may include up to 4m of internal 0.1 - | |
| • Where aggregate intercepts | 0.5g/t dilution which is still considered | |
| incorporate short lengths of high | significant within the broader mineralised felsic | |
| grade results and longer lengths of | porphyry | |
| low grade results, the procedure used | •No metal equivalent reporting is used or | |
| for such aggregation should be stated | required. | |
| and some typical examples of such | ||
| aggregations should be shown in | ||
| detail. | ||
| • The assumptions used for any | ||
| reporting of metal equivalent values | ||
| should be clearly stated. | ||
| Relationship between |
• These relationships are particularly important in the reporting of |
•The intersection length is measured down the length of the hole and is not usually the true |
| mineralisatio | Exploration Results. | width |
| n widths and intercept |
• If the geometry of the mineralisation with respect to the drill hole angle is |
•True widths are variable given the varied drill angles. For the majority of intercepts true widths |
| lengths | known, its nature should be reported. | are around 60-80% of reported intervals. |
| • If it is not known and only the down | ||
| hole lengths are reported, there | ||
| should be a clear statement to this | ||
| effect (e.g. ‘down hole length, true | ||
| _width not known’). _ | ||
| Diagrams | • Appropriate maps and sections (with | •Representative maps and sections are shown |
| scales) and tabulations of intercepts | attached | |
| should be included for any significant | ||
| discovery being 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, |
•All drillhole intercepts completed by RMS were reported in previous ASX releases in 2015 and |
| representative reporting of both low | 2016 | |
| and high grades and/or widths should | ||
| be practiced to avoid misleading | ||
| reporting of Exploration Results. | ||
| Other | • Other exploration data, if meaningful | •No other exploration data that has been |
| substantive | and material, should be reported | collected is considered meaningful and material |
| exploration | including (but not limited to): | to this report |
| data | 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 deleterious or contaminating | ||
| substances. | ||
| Further work | • The nature and scale of planned |
•Future exploration includes further step out |
| further work (e.g. tests for lateral | drilling below and along strike of the reported | |
| extensions or depth extensions or | intersections at Milky Way to better define the | |
| large-scale step-out drilling). | extent of the mineralisation discovered to date | |
| • Diagrams clearly highlighting the | ||
| areas of possible extensions, | ||
| including the main geological | ||
| interpretations and future drilling |
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| Criteria | JORC Code explanation | Commentary | |
|---|---|---|---|
| areas, provided this information is not | |||
| commercially sensitive. | |||
| ection 3 Estimation and Reporting of Mineral Resources | |||
| Criteria | JORC Code explanation | Commentary | |
| Database | • Measures taken to ensure that data | •Data has been sourced from the RMS Drillhole | |
| integrity | has not been corrupted by, for | Database using the Datashed system | |
| example, transcription or keying | •Validation checks were conducted for | ||
| errors, between its initial collection | overlapping intervals, duplicate assays, EOH | ||
| and its use for Mineral Resource | depth and negative or zero assay values | ||
| estimation purposes. | |||
| • Data validation procedures used. | |||
| Site visits | • Comment on any site visits | •The Competent Person has visited the site and | |
| undertaken by the Competent Person and the outcome of those visits. |
confirmed observations available in drill cuttings and surface features. |
||
| • If no site visits have been undertaken | |||
| indicate why this is the case. | |||
| Geological | • Confidence in (or conversely, the | •Confidence in the geological interpretation is | |
| interpretation | uncertainty of) the geological | high. The geometry and nature of | |
| interpretation of the mineral deposit. | mineralisation is similar to neighbouring | ||
| • Nature of the data used and of any | deposits in the region | ||
| assumptions made. | •Data used includes drilling assays & logging | ||
| • The effect, if any, of alternative | from broader spaced exploration/resource | ||
| interpretations on Mineral Resource | drilling and high density grade control drilling | ||
| estimation. | •No alternate interpretation envisaged | ||
| • The use of geology in guiding and | •Geology forms a significant component in the | ||
| controlling Mineral Resource | Mineral Resource modelling & estimation | ||
| estimation. | •Continuity is affected by the location and | ||
| • The factors affecting continuity both | geometry of the felsic porphyry host units and | ||
| of grade and geology. | drilling density | ||
| Dimensions | • The extent and variability of the | •The main Milky Way felsic unit extends for | |
| Mineral Resource expressed as | around 450m in strike (trend 015°- 030°), is | ||
| length (along strike or otherwise), | around 150m wide in the core and narrower | ||
| plan width, and depth below surface | toward strike ends. The unit dips SE at around | ||
| to the upper and lower limits of the | 65-75°. | ||
| Mineral Resource. | •The felsic unit is variably mineralised with most | ||
| economic material occurring in 5-50m wide, | |||
| east dipping zones, adjacent to the eastern | |||
| margin of the unit. | |||
| Estimation | • The nature and appropriateness of | •A categorical +0.2 g/t indicator was kriged | |
| and modelling | the estimation technique(s) applied |
within felsic units to generate a mineralised | |
| techniques | and key assumptions, including | grade domain | |
| treatment of extreme grade values, | •Grade within the domain was then estimated by | ||
| domaining, interpolation parameters | geological software using ordinary kriging | ||
| and maximum distance of | methods within hard bounded oxidation | ||
| extrapolation from data points. If a | domains. | ||
| computer assisted estimation method | •Grade tonnage figures exist for previous | ||
| was chosen include a description of | models. These are difficult to compare except | ||
| computer software and parameters | on a global basis. | ||
| used. | •Only gold is estimated | ||
| • The availability of check estimates, previous estimates and/or mine |
•No deleterious elements present •Parent cell of 10mN x 5mE x 5mRL with sub- |
||
| production records and whether the | cells to minimum of 2.5mN x 2.5mE x 2.5mRL | ||
| Mineral Resource estimate takes | ratio. Parent cell estimation only. |
Section 3 Estimation and Reporting of Mineral Resources
13
| appropriate account of such data. | •The parent cell is assumed to match a selective | |
|---|---|---|
| • The assumptions made regarding | mining unit. | |
| recovery of by-products. | •Domains were geostatistically analysed and | |
| • Estimation of deleterious elements or | assigned appropriate search directions, top- | |
| other non-grade variables of | cuts and estimation parameters. Note: higher | |
| economic significance (e.g. sulphur | grade indicators do not show good continuity | |
| for acid mine drainage | and parameters have been adopted from the | |
| characterisation). | global mineralised population. | |
| • In the case of block model | •Separate grade interpretation for flat lying | |
| interpolation, the block size in relation | transported and oxidised domains |
|
| to the average sample spacing and | •Samples were composited within ore domains | |
| the search employed. | to 1m lengths | |
| • Any assumptions behind modelling of | •Top cuts were applied to domains after review |
|
| selective mining units. | of grade population characteristics. A cut of | |
| • Any assumptions about correlation | 20g/t was applied to the main felsic fresh | |
| between variables. | domain | |
| • Description of how the geological | •Validation included visual comparison against | |
| interpretation was used to control the | drillhole grades | |
| resource estimates. | ||
| • Discussion of basis for using or not | ||
| using grade cutting or capping. | ||
| • The process of validation, the | ||
| checking process used, the | ||
| comparison of model data to drill hole | ||
| data, and use of reconciliation data if | ||
| available. | ||
| Moisture | • Whether t e tonnages are estimated | •Tonnages are estimated on a dry basis |
| on a dry basis or with natural | ||
| moisture, and the method of | ||
| determination of the moisture content. | ||
| Cut-off | • The basis of the adopted cut-off | •A 0.7 g/t grade cut-off has been used for |
| parameters | grade(s) or quality parameters | resource reporting |
| applied. | ||
| Mining factors | • Assumptions made regarding |
•Resources are reported on the assumption of |
| or | possible mining methods, minimum | mining by conventional open pit grade control |
| assumptions | mining dimensions and internal (or, if | and mining methods. Block size and estimation |
| applicable, external) mining dilution. It is always necessary as part of the |
methodology were selected to generate a model appropriate for current open pit mining |
|
| process of determining reasonable | practices at Mt Magnet. | |
| prospects for eventual economic | ||
| extraction to consider potential mining | ||
| methods, but the assumptions made | ||
| regarding mining methods and | ||
| parameters when estimating Mineral | ||
| Resources may not always be | ||
| rigorous. Where this is the case, this | ||
| should be reported with an | ||
| explanation of the basis of the mining | ||
| assumptions made. | ||
| Metallurgical | • The basis for assumptions or | •A number of RC ore samples were composited |
| factors or | predictions regarding metallurgical | and tested in bottle roll leach tests. Results are |
| assumptions | amenability. It is always necessary as | similar to other Mt Magnet deposits with a |
| part of the process of determining | recovery of 92% used for all material. | |
| reasonable prospects for eventual | •Further external testwork is underway | |
| economic extraction to consider | ||
| potential metallurgical methods, but | ||
| the assumptions regarding | ||
| metallurgical treatment processes | ||
| andparameters made when reporting |
14
| Mineral Resources may not always | ||
|---|---|---|
| be rigorous. Where this is the case, | ||
| this should be reported with an | ||
| explanation of the basis of the | ||
| metallurgical assumptions made. | ||
| Environmental factors or |
• Assumptions made regarding possible waste and process residue |
•The existing pit is located in the current Mt Magnet mining field where mining disturbance |
| assumptions | disposal options. It is always | is significant. |
| necessary as part of the process of determining reasonable prospects for |
•Specific Mining Approvals are yet to be sought. •No significant environmental impacts or delays |
|
| eventual economic extraction to consider the potential environmental impacts of the mining and processing operation. While at this stage the |
are anticipated •Treatment and tailings generation would occur at the Mt Magnet Checker mill. |
|
| determination of potential | ||
| environmental impacts, particularly | ||
| for a greenfields project, may not | ||
| always be well advanced, the status | ||
| of early consideration of these | ||
| potential environmental impacts | ||
| should be reported. Where these | ||
| aspects have not been considered | ||
| this should be reported with an | ||
| explanation of the environmental | ||
| assumptions made. | ||
| Bulk density | • Whether assumed or determined. If | •Densities used are assumed based on those |
| assumed, the basis for the | used in Mt Magnet deposits 30km to the south | |
| assumptions. If determined, the | and are assigned by weathering and material | |
| method used, whether wet or dry, the | type | |
| frequency of the measurements, the | •Density measurements are planned to be | |
| nature, size and representativeness | completed when diamond core holes are drilled | |
| of the samples. | ||
| • The bulk density for bulk material | ||
| must have been measured by | ||
| methods that adequately account for | ||
| void spaces (vugs, porosity, etc), | ||
| moisture and differences between | ||
| rock and alteration zones within the | ||
| deposit. | ||
| • Discuss assumptions for bulk density | ||
| estimates used in the evaluation | ||
| process of the different materials. | ||
| Classification | • The basis for the classification of the | •The resource has been classified as Indicated |
| Mineral Resources into varying | or Inferred category’s based on geological | |
| confidence categories. | continuity, drillhole spacing, search pass and | |
| • Whether appropriate account has | kriging variance. | |
| been taken of all relevant factors (ie | •The resource classification accounts for all | |
| relative confidence in tonnage/grade | relevant factors | |
| estimations, reliability of input data, | •The classification reflects the Competent | |
| confidence in continuity of geology | Person’s view | |
| and metal values, quality, quantity | ||
| and distribution of the data). | ||
| • Whether the result appropriately | ||
| reflects the Competent Person’s view | ||
| of the deposit. | ||
| Audits or | • The results of any audits or reviews | •An external review of the Resource has not |
| reviews | of Mineral Resource estimates. | been undertaken |
15
| Discussion of | • | Where appropriate a statement of the | •Confidence in the relative accuracy of the |
|---|---|---|---|
| relative | relative accuracy and confidence | estimates is reflected by the classifications | |
| accuracy/ | level in the Mineral Resource | assigned | |
| confidence | estimate using an approach or | •The estimate is a global estimate | |
| procedure deemed appropriate by the Competent Person. For example, the |
•Some comparison to historic grade control data and global production figures was made. The |
||
| application of statistical or | existing Milky Way pit mined in 1999/2000 is | ||
| geostatistical procedures to quantify | recorded as producing 626,723 t @ 1.64 g/t for | ||
| the relative accuracy of the resource | 33,073 oz. | ||
| within stated confidence limits, or, if | |||
| such an approach is not deemed | |||
| appropriate, a qualitative discussion | |||
| of the factors that could affect the | |||
| relative accuracy and confidence of | |||
| the estimate. | |||
| • | The statement should specify | ||
| whether it relates to global or local | |||
| estimates, and, if local, state the | |||
| relevant tonnages, which should be | |||
| relevant to technical and economic | |||
| evaluation. Documentation should | |||
| include assumptions made and the | |||
| procedures used. | |||
| • | These statements of relative | ||
| accuracy and confidence of the | |||
| estimate should be compared with | |||
| production data, where available. |
16