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RAMELIUS RESOURCES LIMITED — Capital/Financing Update 2014
Jun 9, 2014
65718_rns_2014-06-09_1a0c1d3a-a7ca-4e11-952e-016cdc87c2e3.pdf
Capital/Financing Update
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10 June 2014 For Immediate Release
ACQUISITION OF KATHLEEN VALLEY GOLD PROJECT
Highlights:
-
Ramelius to acquire the high grade Kathleen Valley Gold Project in WA
-
Kathleen Valley project located close to the Company’s new Vivien Gold Project
-
Creates synergies for Ramelius’ integrated high grade WA gold development
Kathleen Valley Gold Project Acquisition
The Directors of Australian gold producer, Ramelius Resources Limited (ASX: RMS), are pleased to announce a further broadening of the Company’s gold operations in Western Australia.
Ramelius has signed a Sale and Purchase Agreement with Xstrata Nickel Australasia Operations Pty Limited (XNAO), a subsidiary of Glencore plc, and with Giralia Resources Pty Limited (Giralia) to acquire 100% of the XNAO Kathleen Valley tenements and 100% of the tenements held by XNAO and Giralia as the participants in the Kathleen Valley and Mount Harris Joint Ventures.
The XNAO Kathleen Valley tenements are located 50km north of Leinster in Western Australia (Figure 1) and contain a JORC (2012) Mineral Resource of 130,000 ounces of gold in three deposits - Mossbecker, Yellow Aster and Nils Desperandum (see Table 1).
Ramelius intends to complete further resource definition drilling within the next six months to enable the Company to upgrade the resources to Indicated, for use in future mine planning studies.
Scoping studies undertaken on behalf of XNAO indicate the potential for high grade open pit developments with low capital costs.
Upon completion of the Sale and Purchase Agreement, the signing of ancillary Deeds of Assumption and Assignment plus a Nickel Offtake and Clawback Agreement with XNAO, Ramelius will pay XNAO A$3.645 million cash for 100% of its Kathleen Valley tenements. In addition Ramelius has agreed to pay A$405,000 cash to acquire 100% of the adjacent Kathleen Valley Joint Venture and Mt Harris Joint Venture. Collectively the package of three contiguous tenement groups will be referred to as the Kathleen Valley Gold Project.
Managing Director Ian Gordon said, “The acquisition of the Kathleen Valley Gold Project will add significantly to Ramelius’ recent acquisition of the Vivien Gold Project, enable cost reduction synergies across both projects and significantly build on the Company’s strategy to create a high yielding, positive cash flow mining business centred on its established Mt Magnet Milling Operations.”
For further information contact:
Ian Gordon Managing Director Ph: 08 9202 1127
Mark Zeptner COO Ph: 08 9202 1127
==> picture [264 x 248] intentionally omitted <==
Figure 1: Ramelius’ Western Australian project locations
Kathleen Valley Mineral Resource Summary
Resources are generated from 475 RC and Diamond holes drilled by previous companies between 1984 and 2012. All resources are located on ML36/375. Drillhole density is typically 12.5m by 25m to 25m x 50m. Mineralisation occurs as shallow dipping silica-sericite sulphide lenses within a granitic conglomerate proximal to a shallow dipping fault contact with underlying mafic units. Split RC subsamples and half core were assayed by Aqua Regia and Fire Assay methods. Gold was estimated within 3D lode shapes interpreted using a 0.5 g/t cut-off and Ordinary Kriging methods. Metallurgical testwork shows high recovery suitable for normal CIP/CIL processing and open pit mining methods are assumed. Detailed information is given in JORC Table 1 below.
2
==> picture [262 x 349] intentionally omitted <==
Figure 2: Kathleen Valley gold project land package, relative to the recently acquired Vivien Gold Project at Leinster
==> picture [488 x 185] intentionally omitted <==
Figure 3: Mossbecker deposit 0.5 g/t mineralisation envelope, looking east
3
Table 1: Kathleen Valley Project Mineral Resources, > 0.5 g/t Au cut-off grade
| Deposit | Category | Tonnes | Grade (g/t Au) | Ounces |
|---|---|---|---|---|
| Mossbecker | Indicated | 130,000 | 3.0 | 13,000 |
| Inferred | 390,000 | 4.1 | 51,000 | |
| Total | 520,000 | 3.8 | 63,000 | |
| Yellow Aster | Indicated | 120,000 | 2.3 | 9,000 |
| Inferred | 610,000 | 1.9 | 37,000 | |
| Total | 730,000 | 2.0 | 46,000 | |
| Nils Desperandum | Indicated | 70,000 | 3.0 | 7,000 |
| Inferred | 120,000 | 3.5 | 14,000 | |
| Total | 190,000 | 3.4 | 21,000 | |
| Total | 1,440,000 | 2.8 | 130,000 |
Note: Figures are rounded to nearest 10,000 tonnes, 0.1 g/t and 1,000 ounces. Rounding errors may occur.
Table 2: Agreements Summary
| Project | Vendors | Agreement Type |
Agreement Term |
Purchase Price to Exercise Agreements |
|---|---|---|---|---|
| Kathleen Valley Gold Project |
XNAO | Sale and Purchase Agreement |
N/A | A$3,645,000 cash only |
| Mt Harris JV Project |
XNAO and Giralia Resources Pty Ltd |
Sale and Purchase Agreement |
N/A | A$202,500 cash only |
| Kathleen Valley JV Project |
XNAO and Giralia Resources Pty Ltd |
Sale and Purchase Agreement |
N/A | A$202,500 cash only |
The Information in this report that relates to Exploration Results is based on information compiled by Kevin Seymour, a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy. Kevin Seymour is a full-time employee of Ramelius Resources Limited. Kevin Seymour has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity they have undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Kevin Seymour consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
The Information in this report that relates to Mineral Resources is based on information compiled by Rob Hutchison, a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy. Rob Hutchison is a full-time employee of Ramelius Resources Limited. Rob Hutchison has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity they have undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Rob Hutchison consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
4
JORC Code, 2012 Edition
Table 1 Report for Kathleen Valley Gold Project Section 1 Sampling Techniques and Data
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sampling | • Nature and quality of sampling (eg cut | •The Kathleen Valley deposits consisting of |
| techniques | channels, random chips, or specific | Mossbecker, Yellow Aster and Nils |
| specialised industry standard | Desperandum were drilled by Newmont in the | |
| measurement tools appropriate to the | mid 1980’s, Sir Samuel Mines in the late 1980’s | |
| minerals under investigation, such as | and by Jubilee Mines in the early 1990’s. | |
| down hole gamma sondes, or | Xstrata undertook further drilling in 2012 to | |
| handheld XRF instruments, etc). | improve the confidence in the continuity of the | |
| These examples should not be taken | high grade gold mineralisation | |
| as limiting the broad meaning of | •RC samples were predominantly collected as | |
| sampling. | 1m samples with 2m also used and subsampled | |
| • Include reference to measures taken | using a riffle or cone splitter to produce≈3kg | |
| to ensure sample representivity and | sub-samples. Diamond core was halved with a | |
| the appropriate calibration of any | diamond saw to produce representative sub- | |
| measurement tools or systems used. | samples on 1m or geologically selected intervals | |
| • Aspects of the determination of | •Drillhole locations were designed to allow for | |
| mineralisation that are Material to the | spatial spread across the interpreted mineralised | |
| Public Report. | zone. RC samples were riffle split to≈3-4kg | |
| • In cases where ‘industry standard’ | samples on 1m metre intervals | |
| work has been done this would be | •No new drilling has been completed by | |
| relatively simple (eg ‘reverse | Ramelius. All drillhole data is historical with the | |
| circulation drilling was used to obtain | most recent completed by Xstrata in 2012 | |
| 1 m samples from which 3 kg was | •Drill samples were pulverized and assayed by | |
| pulverised to produce a 30 g charge | 25g Aqua Regia or 50g Fire Assay, with an AAS | |
| for fire assay’). In other cases more | finish | |
| explanation may be required, such as | ||
| where there is coarse gold that has | ||
| inherent sampling problems. Unusual | ||
| commodities or mineralisation types | ||
| (eg submarine nodules) may warrant | ||
| disclosure of detailed information. | ||
| Drilling | • Drill type (eg core, reverse circulation, | •RC drilling was completed using standard +5” |
| techniques | open-hole hammer, rotary air blast, | drill hammers. Diamond drillholes include HQ |
| auger, Bangka, sonic, etc) and details | and NQ core sizes. Core was not orientated. | |
| (eg core diameter, triple or standard | •For Mossbecker 87% of the drilling was by RC | |
| tube, depth of diamond tails, face- | and 13% was by diamond drilling. For Yellow | |
| sampling bit or other type, whether | Aster & Nils Desperandum 96% of the drilling | |
| core is oriented and if so, by what | was by RC and 4% was by diamond drilling | |
| _method, etc). _ | ||
| Drill sample | • Method of recording and assessing | •No drill recovery information is available for RC |
| recovery | core and chip sample recoveries and | drilling. Core recovery recorded for 16 diamond |
| results assessed. | drillholes is almost uniformly 100% and | |
| • Measures taken to maximise sample | inspection of core shows deposit is hosted by | |
| recovery and ensure representative | competent units which would be amenable to | |
| nature of the samples. | effective RC drilling | |
| • Whether a relationship exists between | •No indication of sample bias is evident or has |
|
| sample recovery and grade and | been established | |
| whether sample bias may have | ||
| occurred due to preferential loss/gain | ||
| of fine/coarse material. |
5
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Logging | • Whether core and chip samples have | •RC and diamond drill samples were geologically |
| been geologically and geotechnically | logged for lithology. Lessor amounts of logging | |
| logged to a level of detail to support | detail exist for sulphides, alteration, geotechnical | |
| appropriate Mineral Resource | and ore intercepts | |
| estimation, mining studies and | •Drillhole logging of RC chips is qualitative on | |
| metallurgical studies. | visual recordings of rock forming minerals and | |
| • Whether logging is qualitative or | quantitative on estimates of mineral abundance. | |
| quantitative in nature. Core (or | •The entire length of drillholes are geologically | |
| costean, channel, etc) photography. | logged | |
| • The total length and percentage of the | ||
| relevant intersections logged. | ||
| Sub- | • If core, whether cut or sawn and | •For older historic drilling, sub-sampling and |
| sampling | whether quarter, half or all core taken. | sample preparation techniques are unknown. |
| techniques | • If non-core, whether riffled, tube | For Xstrata drilling: |
| and sample | sampled, rotary split, etc and whether | •Sawn half diamond core samples and dry RC |
| preparation | sampled wet or dry. | samples are riffle split to≈3kg sub-samples. |
| • For all sample types, the nature, | •Samples were entirely pulverized prior to sub- | |
| quality and appropriateness of the | sampling in the laboratory to ensure | |
| sample preparation technique. | homogenous samples with 85% passing 75um. | |
| • Quality control procedures adopted for | 200gm is extracted by spatula that is used for |
|
| all sub-sampling stages to maximise | the 50gm charge on standard fire assays. | |
| representivity of samples. | •For the 2012 drilling program Xstrata | |
| • Measures taken to ensure that the | implemented a programme of quality control on | |
| sampling is representative of the in | RC drilling involving certified reference | |
| situ material collected, including for | standards (1:20), field duplicates (1:20) blank | |
| instance results for field | samples (1:40) and umpire laboratory check | |
| duplicate/second-half sampling. | samples (1:40) to monitor the accuracy and | |
| • Whether sample sizes are appropriate | precision of laboratory data. |
|
| to the grain size of the material being | •The sample size is considered appropriate for | |
| sampled. | the type, style, thickness and consistency of | |
| mineralization. | ||
| Quality of assay data |
• The nature, quality and appropriateness of the assaying and |
•The use of Aqua Regia method for many historical assays (approximately 50%) may not |
| and | laboratory procedures used and | fully evaluate total gold in samples but would still |
| laboratory | whether the technique is considered | be indicative of the majority of gold present. Fire |
| tests | partial or total. | Assay would be more effective at measuring |
| • For geophysical tools, spectrometers, handheld XRF instruments, etc, the |
total gold and is considered appropriate. •No field analyses of gold grades are completed. |
|
| parameters used in determining the | Quantitative analysis of the gold content and | |
| analysis including instrument make | trace elements is undertaken in a controlled | |
| and model, reading times, calibrations | laboratory environment. |
|
| factors applied and their derivation, | •QAQC measures were carried out by Xstrata | |
| etc. | and included certified reference standards, field | |
| • Nature of quality control procedures | duplicates, blank samples and umpire laboratory | |
| adopted (eg standards, blanks, | check samples | |
| duplicates, external laboratory checks) | •QAQC measures are not available for the |
|
| and whether acceptable levels of | majority of historic drilling. | |
| accuracy (ie lack of bias) and | ||
| precision have been established. | ||
| Verification | • The verification of significant | •Ramelius personnel have inspected the RC drill |
| of sampling | intersections by either independent or | sites in the field and available core holes to |
| and | alternative company personnel. | verify the correlation of mineralized zones |
| assaying | • The use of twinned holes. | between assay results and lithology, alteration |
| • Documentation of primary data, data | and mineralization. | |
| entry procedures, data verification, | •Drillholes are frequently overlapping or | |
| data storage (physical and electronic) | confirmed by later close spaced drilling. 2012 | |
| protocols. | Xstrata drillholes re-test numerous earlier holes, |
6
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| • Discuss any adjustment to assay data. | compare well and are the main verification of |
|
| previous sampling and assay results. | ||
| •Documentation of historic primary data, data | ||
| entry and verification is generally unavailable. | ||
| •No adjustments or calibrations are made to any | ||
| of the assaydata recorded in the database. | ||
| Location of | • Accuracy and quality of surveys used | •Most drillhole collars were picked up using |
| data points | to locate drill holes (collar and down- | DGPS survey control. Only limited downhole |
| hole surveys), trenches, mine | survey is available. Many holes are vertical and | |
| workings and other locations used in | unsurveyed. | |
| Mineral Resource estimation. | •Holes were transcribed to MGA94 – Zone 51 | |
| • Specification of the grid system used. | grid coordinates. | |
| • Quality and adequacy of topographic | •Topographic control is established from DTMs | |
| control. | generated from mine surveyors’ total station final | |
| pickups of the surroundinglandforms. | ||
| Data spacing | • Data spacing for reporting of |
•Drillhole spacing ranges from 12.5 x 25m to 25m |
| and | Exploration Results. | x 50m and frequently closer in core resource |
| distribution | • Whether the data spacing and | areas. |
| distribution is sufficient to establish the | •Drill spacing is sufficient to establish Mineral |
|
| degree of geological and grade | Resources and classifications applied. | |
| continuity appropriate for the Mineral | •No sampling compositing has been applied | |
| Resource and Ore Reserve estimation | within key mineralised intervals. |
|
| procedure(s) and classifications | ||
| applied. | ||
| • Whether sample compositing has | ||
| been applied. | ||
| Orientation | • Whether the orientation of sampling | •The drilling is drilled orthogonal to the |
| of data in | achieves unbiased sampling of | interpreted strike of the target horizon. Holes are |
| relation to | possible structures and the extent to | frequently vertical, intersecting sub-horizontal |
| geological | which this is known, considering the | mineralisation |
| structure | deposit type. | •Structural logging of available diamond core |
| • If the relationship between the drilling | supports the drilling direction | |
| orientation and the orientation of key | •No drilling orientation and/or sampling bias has | |
| mineralised structures is considered to | been recognized in the data at this time. |
|
| have introduced a sampling bias, this | ||
| should be assessed and reported if | ||
| material. | ||
| Sample | • The measures taken to ensure sample | •Historical data, measures unknown |
| security | security. | |
| Audits or | • The results of any audits or reviews of | •Ramelius and others have reviewed sampling |
| reviews | sampling techniques and data. | techniques and data. A lack of detailed |
| information on historic drilling methods and QAQC has been previously noted. However |
||
| there are no indications that previous | ||
| methodologies were below industry standard or | ||
| data is biased. |
7
Section 2 Reporting of Exploration Results
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | • Type, reference name/number, | •The results reported in this report are on granted |
| tenement | location and ownership including | Mining Lease ML36/375 being acquired by |
| and land | agreements or material issues with | Ramelius Resources Limited under Sale and |
| tenure status | third parties such as joint ventures, | Purchase Agreement with XNAO. The mining |
| partnerships, overriding royalties, | lease is located on a pastoral lease. Heritage | |
| native title interests, historical sites, | surveys are completed prior to any ground | |
| wilderness or national park and | disturbing activities in accordance with | |
| environmental settings. | Ramelius’ responsibilities under the Aboriginal | |
| • The security of the tenure held at the | Heritage Act. | |
| time of reporting along with any known | •At this time all the tenements are in good |
|
| impediments to obtaining a licence to | standing. There are no known impediments to | |
| operate in the area. | obtaininglicences to operateinthe 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 and RC drilling, | ||
| geophysical data collection and interpretation. | ||
| Geology | • Deposit type, geological setting and | •The mineralisation at the Kathleen Valley |
| style of mineralisation. | deposits is typical of orogenic structurally | |
| controlled Archaean gold lode systems. The | ||
| mineralisation is controlled by a flat lying N/S | ||
| trending fault passing through the Jones Creek | ||
| Conglomerate and overlying ultramafic rocks. | ||
| The Mossbecker deposit, for example, extends | ||
| over 350m strike. Gold mineralisation occurs in | ||
| 1 or 2 main sub-horizontal lodes 2-10m thick | ||
| and 40-80m wide and plunges around 15°to the | ||
| southwest. | ||
| Drill hole | • A summary of all information material | •Not Applicable |
| Information | to the understanding of the | |
| exploration results including a | ||
| tabulation of the following information | ||
| for all Material drill holes: | ||
o easting and northing of the drill |
||
| hole collar | ||
o elevation or RL (Reduced Level – |
||
| elevation above sea level in | ||
| metres) of the drill hole collar | ||
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 | • In reporting Exploration Results, | •Not Applicable |
| aggregation | weighting averaging techniques, | |
| methods | maximum and/or minimum grade | |
| truncations (eg cutting of high grades) | ||
| and cut-offgrades are usually Material |
8
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| and should be stated. | ||
| • Where aggregate intercepts | ||
| incorporate short lengths of high | ||
| grade results and longer lengths of | ||
| low grade results, the procedure used | ||
| for such aggregation should be stated | ||
| and some typical examples of such | ||
| aggregations should be shown in | ||
| detail. | ||
| • The assumptions used for any | ||
| reporting of metal equivalent values | ||
| should be clearly stated. | ||
| Relationship | • These relationships are particularly | •Not Applicable |
| between | important in the reporting of | |
| mineralisatio | Exploration Results. | |
| n widths and | • If the geometry of the mineralisation |
|
| intercept | with respect to the drill hole angle is | |
| lengths | known, its nature should be reported. | |
| • If it is not known and only the down | ||
| hole lengths are reported, there | ||
| should be a clear statement to this | ||
| effect (eg ‘down hole length, true | ||
| _width not known’). _ | ||
| Diagrams | • Appropriate maps and sections (with | •Not Applicable |
| scales) and tabulations of intercepts | ||
| 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 | • Where comprehensive reporting of all | •Not Applicable |
| reporting | Exploration Results is not practicable, | |
| representative reporting of both low | ||
| and high grades and/or widths should | ||
| be practiced to avoid misleading | ||
| reporting of Exploration Results. | ||
| Other | • Other exploration data, if meaningful | •Not Applicable |
| substantive | and material, should be reported | |
| exploration | including (but not limited to): | |
| 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 |
•Further planned work includes infill RC and |
| further work (eg tests for lateral | selected diamond twins to further validate the | |
| extensions or depth extensions or | resource and increase its confidence to an | |
| large-scale step-out drilling). | Indicated status. Ramelius also plans to drill | |
| • Diagrams clearly highlighting the | deeper holes below the Mossbecker deposit to | |
| areas of possible extensions, | better define the extent of the mineralisation. | |
| including the main geological | ||
| interpretations and future drilling | ||
| areas, provided this information is not | ||
| commercially sensitive. |
9
Section 3 Estimation and Reporting of Mineral Resources
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Database | • Measures taken to ensure that data | •Data has been sourced from an Access |
| integrity | has not been corrupted by, for | Drillhole Database provided by XNAO |
| example, transcription or keying | •Previous reports detail validation checks for | |
| errors, between its initial collection | missing assays and geology intervals, | |
| and its use for Mineral Resource | overlapping intervals, duplicate assays, EOH | |
| estimation purposes. | depth, hole collar elevations and assay value | |
| • Data validation procedures used. | detection limits, negative and zero values | |
| Site visits | • Comment on any site visits | •The Competent Persons have made one site |
| undertaken by the Competent Person | visit viewing deposit areas, to view drill collar |
|
| and the outcome of those visits. | locations, surface geological outcrop and a | |
| • If no site visits have been undertaken | number of representative diamond drillhole | |
| indicate why this is the case. | cores. | |
| Geological | • Confidence in (or conversely, the | •Confidence in the geological interpretation is |
| interpretation | uncertainty of) the geological | high |
| interpretation of the mineral deposit. | •Data used include drilling assay and geological | |
| • Nature of the data used and of any | logging, surface outcrop and minor historic | |
| assumptions made. | surface and underground workings, diamond | |
| • The effect, if any, of alternative | core logging and structure | |
| interpretations on Mineral Resource | •No alternate interpretation envisaged. | |
| estimation. | •Geology confirms primary grade interpretation | |
| • The use of geology in guiding and | •Grade continuity affected by relatively nuggety | |
| controlling Mineral Resource | gold mineralisation | |
| estimation. | ||
| • The factors affecting continuity both | ||
| of grade and geology. | ||
| Dimensions | • The extent and variability of the | •The Mossbecker deposit extends over 350m |
| Mineral Resource expressed as | strike. Gold mineralisation occurs in sub- | |
| length (along strike or otherwise), | horizontal lodes 2-10m thick and 40-80m wide | |
| plan width, and depth below surface | and plunges around 15° to the southwest. The | |
| to the upper and lower limits of the | other deposits are of similar dimensions and | |
| Mineral Resource. | nature. | |
| Estimation | • The nature and appropriateness of | •Deposits were estimated using geological |
| and modelling | the estimation technique(s) applied |
software using Ordinary Kriging within hard |
| techniques | and key assumptions, including | bounded mineralised domains. The estimation |
| treatment of extreme grade values, | method is appropriate for the deposit type. | |
| domaining, interpolation parameters | •The deposits have been previously modelled | |
| and maximum distance of | and estimated and comparisons with the most | |
| extrapolation from data points. If a | recent model made | |
| computer assisted estimation method | •Only gold is estimated |
|
| was chosen include a description of computer software and parameters used. |
•No deleterious elements present •Block size was determined by kriging efficiency test. Parent cell of 12.5mN x 5mE x 5mRL |
|
| • The availability of check estimates, previous estimates and/or mine production records and whether the Mineral Resource estimate takes appropriate account of such data. • The assumptions made regarding recovery of by-products. • Estimation of deleterious elements or other non-grade variables of |
•No assumption made on selective mining unit •Each domain was geostatiscally analysed and assigned appropriate search directions, top- cuts and kriging parameters •Geological interpretation matches grade domain interpretation with sub-horizontal lodes used to model deposit •Top cuts were applied to domains after review of grade population characteristics a 99.5% |
10
| economic significance (eg sulphur for | topcut of 60 g/t was applied | |
|---|---|---|
| acid mine drainage characterisation). | •Validation included visual comparison against | |
| • In the case of block model | drillhole grades, global grade statistic | |
| interpolation, the block size in relation | comparisons and swath grade plots |
|
| to the average sample spacing and | ||
| the search employed. | ||
| • Any assumptions behind modelling of | ||
| selective mining units. | ||
| • Any assumptions about correlation | ||
| between variables. | ||
| • Description of how the geological | ||
| interpretation was used to control the | ||
| 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 the 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 0.5 g/t grade cut-off has been used for ore |
| parameters | grade(s) or quality parameters | interpretation and resource reporting |
| applied. | •This cutoff encapsulates the mineralisation | |
| effectively and typically discriminates economic | ||
| material from waste | ||
| 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. The majority of reported |
| applicable, external) mining dilution. It | resource is less than 100m deep. Previous |
|
| is always necessary as part of the | scoping studies show a significant proportion of | |
| process of determining reasonable | resources can be economic in an open pit | |
| prospects for eventual economic | scenario. Studies have included block | |
| extraction to consider potential mining | regularisation to simulate significant mining |
|
| methods, but the assumptions made | dilution that would be incurred mining sub- | |
| regarding mining methods and | horizontal lodes | |
| 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 | •Metallurgical testwork commissioned by XNAO |
| factors or | predictions regarding metallurgical | on composited drill core samples shows |
| assumptions | amenability. It is always necessary as | Mossbecker ore to be free milling with a high |
| part of the process of determining | gravity gold and total recovery of +95% | |
| reasonable prospects for eventual | ||
| economic extraction to consider | ||
| potential metallurgical methods, but | ||
| the assumptions regarding | ||
| metallurgical treatment processes | ||
| and parameters made when reporting | ||
| Mineral Resources may not always | ||
| be rigorous. Where this is the case, |
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| this should be reported with an | ||
|---|---|---|
| explanation of the basis of the | ||
| metallurgical assumptions made. | ||
| Environmental | • Assumptions made regarding |
•No specific issues beyond normal open pit mine |
| factors or | possible waste and process residue | licensing are envisaged |
| assumptions | disposal options. It is always | •Areas within the mining lease are available for |
| necessary as part of the process of determining reasonable prospects for |
placement of a Waste Land Form. Waste rocks lack sulphides and are likely to be Non Acid |
|
| eventual economic extraction to | Forming, although waste characterisation | |
| consider the potential environmental | studies are yet to be completed | |
| impacts of the mining and processing | •Ore processing will take place at existing mill | |
| operation. While at this stage the | facilities offsite | |
| determination of potential environmental impacts, particularly for a greenfields project, may not |
•Water inflows can be pumped to existing open pits |
|
| 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 | •Density measurements were carried out by |
| assumed, the basis for the | Jubilee on HQ diamond core using the water | |
| assumptions. If determined, the | immersion method | |
| method used, whether wet or dry, the | •Densities of 2.3 for oxide, 2.5 for transitional | |
| frequency of the measurements, the | and 2.8 for fresh were applied | |
| nature, size and representativeness | ||
| 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 | •While the deposits are relatively well drilled and |
| Mineral Resources into varying | confidence in geological interpretation and | |
| confidence categories. | grade is good, the historical nature of drilling | |
| • Whether appropriate account has | and lack of detail on methodology and QAQC | |
| been taken of all relevant factors (ie | measures means Resource classification has | |
| relative confidence in tonnage/grade | been largely classed as Inferred. Some more | |
| estimations, reliability of input data, | recent drilling, areas of high drill density and | |
| confidence in continuity of geology | confidence have been classed as Indicated. | |
| and metal values, quality, quantity | •The resource classification accounts for all | |
| and distribution of the data). | relevant factors | |
| • Whether the result appropriately | •The classification reflects the Competent | |
| reflects the Competent Person’s view | Person’s view | |
| of the deposit. | ||
| Audits or | • The results of any audits or reviews | •No audits or reviews have been undertaken, |
| reviews | of Mineral Resource estimates. | however a number of previous resource |
| estimates have been made and compared |
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| 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 estimates are global estimates | |
| procedure deemed appropriate by the Competent Person. For example, the |
•No production data is available for comparison |
||
| application of statistical or | |||
| geostatistical procedures to quantify | |||
| the relative accuracy of the resource | |||
| 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. |
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