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VOLT RESOURCES LIMITED — Regulatory Filings 2015
Oct 26, 2015
66019_rns_2015-10-26_53c5641d-3bda-44f1-9589-bb65cae16b88.pdf
Regulatory Filings
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ASX ANNOUNCEMENT
By e-lodgement 27 October 2015
Major New Graphite Discovery at Namangale
Highlights:
-
Thick intercepts up to 100m (and remaining open) from surface intersected
-
All mineralisation was intersected from surface
-
Majority of mineralisation logged as medium or high grade with coarse flake graphite observed
-
Thicker area of mineralisation includes 100, 94, 75, 73, 47 and 35 metres over 960m width
-
A total of 12 holes completed with mineralisation intersected over 10 holes at 160m spacing
-
The drilling program is now mobilising to the next line 400m to the north east where graphite outcrop is mapped on the surface
-
Intercepts targeted on the centre of large EM anomaly which is 1800m in length
-
Excellent infrastructure in place with deep water port only 140km from site with electricity, water and sealed roads available
Introduction
Mozambi Resources Limited (ASX: MOZ, “ Mozambi”, “the Company” ) is pleased to announce a major new graphite discovery at the Company’s flagship prospect, Namangale. Drilling returned multiple large intercepts up to 100m thickness of graphite mineralisation, with drill several holes remaining open at depth. The Company is delighted to confirm that all mineralisation intersected was from surface. The majority of mineralisation logged as medium and high grade with coarse flake graphite observed. Assay results are expected in approximately 4 weeks’ time.
The drilling was conducted using 160m spacing and has defined two zones of mineralisation - the first 960m in width averaging 71m in thickness and the other 640m in width averaging 41m in thickness. The drilling completed is targeting a large EM anomaly, which has previously been defined and has a strike length of over 1800m.
Managing Director Alan Armstrong said, “The Company is extremely excited to announce a new major graphite discovery at Namangale. The results confirm mineralisation occurs over very substantial thickness from surface and is coincident with the large EM anomaly defined by a survey conducted earlier in October. The width and thickness of the mineralisation shows the Namangale Prospect hosts a very large amount of graphite mineralisation. Drilling is being fast tracked in order to define a large tonnage JORC Resource in the coming months”.
Figure 1 shows the location of the Nachingwea Project tenements and the main graphite prospects. Following completion of the first 12 RC drill holes at Namangale, the drill rig has now been mobilised 400m to the north where outcropping graphite mineralisation has been mapped. The program also
includes several diamond holes to obtain metallurgical samples to test the flake size of fresh graphite mineralisation from the prospect.
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Figure 1 Location of the Nachingwea Project tenements
Namangale RC Drilling Results
12 RC holes for a total of 665 metres have now been drilled at the Namangale Prospect, with 10 holes intersecting graphite schist mineralisation. The mineralisation tested a large EM anomaly coincident with graphite schist outcrops. Where mineralisation was intersected, it was intercepted from surface and drilling is now planned to test the northern and southern extent of the EM anomaly. A summary of the results of the first 12 holes based on visual estimation carried out during the geological logging is provided in Table 1 below.
Table 1 Graphite Intercepts Namangale
| HoleID | Easting | Northing | Azi/Dip | RL | Depth | From | To | Width |
|---|---|---|---|---|---|---|---|---|
| NMRC0001 | 517,279 | 8,861,794 | 90/0 | 323 | 85 | 0 | 73 | 73 |
| NMRC0002 | 517,159 | 8,861,899 | 90/0 | 298 | 78 | 0 | 75 | 75 |
| NMRC0003 | 517,038 | 8,862,004 | 90/0 | 324 | 100 | 0 | 100 | 100 |
| NMRC0004 | 516,917 | 8,862,109 | 90/0 | 306 | 94 | 0 | 94 | 94 |
| NMRC0005 | 516,796 | 8,862,214 | 90/0 | 297 | 49 | 0 | 35 | 35 |
| NMRC0006 | 516,676 | 8,862,319 | 90/0 | 323 | 22 | NSI | ||
| NMRC0007 | 517,400 | 8,861,689 | 90/0 | 317 | 52 | 0 | 47 | 47 |
| NMRC0008 | 517,521 | 8,861,584 | 90/0 | 314 | 28 | 0 | 17 | 17 |
| NMRC0009 | 517,642 | 8,861,479 | 90/0 | 328 | 82 | 0 | 76 | 76 |
| NMRC0010 | 517,762 | 8,861,374 | 90/0 | 310 | 43 | 0 | 43 | 43 |
| NMRC0011 | 517,883 | 8,861,269 | 90/0 | 310 | 16 | 0 | 5 | 5 |
| NMRC0012 | 518,004 | 8,861,164 | 90/0 | 314 | 16 | NSI |
*NSI indicates no significant intercepts
Drilling was completed using vertical holes into the mineralisation which is expected to be gently undulating based on both geological mapping and the results of the EM survey. Figure 2 below shows the RC rig on the first hole where 73 metres of mineralisation was intercepted from surface. The majority of holes were able to penetrate the full width of mineralisation however three holes reached 43, 94 and 100m with mineralisation remaining open at depth. The ridge in the background of figure 2 is a cretaceous sandstone unit covering the older Proterozoic sequence which form the low undulating hills in the foreground that hosts the graphite mineralisation at Namangale. Figure 3 shows mineralised RC chips recovered from the drilling program at Namangale.
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Figure 2 RC Drill-Hole on the First hole at Namangale
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Figure 3 A sample of mineralised RC chips from the Namangale Prospect
A map showing the location of the first drill line compared to the location of the ground EM anomaly for the Namangale Prospect is shown below in Figure 4 . The drilling program was primarily designed to test this EM anomaly and started near where there was a substantial area of graphite schist outcrop. The results of the drilling indicate a strong correlation between the thickness of mineralisation and the size of the EM anomaly. As can be seen in Figure 4 , the EM anomaly is striking to the North East with a similar intensity to the area already drill tested.
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Figure 4 RC Drill-Hole Location Map over the Ground EM Anomaly
A map of the drill hole collar location showing the location of the first drill line is shown in Figure 5 . Substantial areas of graphite schist occur to the south of a large sandstone ridge with less exposure to the south where there is limited outcrop. The current drill program will test approximately 2km of strike length covering the area where outcrops are exposed and the Company believes there remains potential for the deposit to continue under cover to the north east and south west.
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Figure 5 Geological Mapping and the Collar Location of the first 12 holes drilled at Namangale
A cross section across the first drill line is provided in Figure 6 showing the two zones of mineralisation which are interpreted to be the result of gentle folding of a generally flat lying mineralised unit.
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Figure 6 Cross section showing the interpreted graphite mineralisation in the first drill line
Diamond Core Drilling
Diamond drilling is expected to commence in the coming days with drilling targeting fresh samples of graphite schist mineralisation that will be tested for flake size distribution and purity. Metallurgical results from diamond drilling will evaluate the size of the coarse flake graphite observed.
Expanded RC Drilling Program
Due to the results of the current round of drilling, Mozambi will increase the current RC drilling program with an additional 2000m to complete a further three or four drill lines. This will expand the amount of drilling from the planned 1800m to 3800m of RC drilling.
Existing Infrastructure
Mozambi Resources enjoys excellent infrastructure, with the deep-water Mtwara Port only 140km from site. Power and sealed roads are available 10km from the deposit location. The existing sealed road connects all the way to port. Figure 7 shows the port, which has existing present capacity of 400,000 metric tonnes per annum and could handle up to 750,000 metric tonnes per annum with the same number of berths if additional equipment is put in place for handling containerised traffic[i] . The port is currently heavily underutilised, with only approximately 34% of its existing capacity being utilised[ii] .
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Figure 7 shows the deep-water Mtwara Port
Nachingwea Project Summary
The project area is located in the south east of Tanzania, which is becoming a significant new province for large tonnage, coarse flake graphite deposits with a number of JORC compliant resources now announced by graphite explorers in the region. The Nachingwea project is located approximately 60km south of ASX listed Magnis Resources’ Nachu Project (ASX: MNS). Graphite mineralisation in the province typically occurs in stratigraphic layers of graphitic schist, within a package of high pressure/temperature metamorphic rocks that make up the Mozambique Mobile Belt. Preliminary Flake size analysis at several of the company’s graphite prospects including at Chiwata returned highly encouraging graphite flake size results which is expected be confirmed when fresh representative samples from the current drilling program are tested.
Conclusion
The Board of Mozambi Resources considers the results to date indicate that the Namangale Prospect is rapidly emerging as a world class graphite deposit. A substantial width of graphite mineralisation has now been defined and it is occurring from surface. Diamond drilling to confirm the expected coarse nature of graphite mineralisation is expected to commence shortly while additional lines of RC drilling are completed. Further drilling and assay results will be reported as they come to hand.
For and on behalf of Mozambi Resources Limited
Alan Armstrong Mozambi Resources Ltd Managing Director
Competent Person
The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Mr Matt Bull, a Competent Person who is a member of Australian Institute of Geoscientists. Mr Bull is a Director of Mozambi Resources. Mr Bull has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Matt Bull consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
i http://www.tanzaniaports.com/index.php?option=com_content&view=article&id=131&Itemid=290 ii http://allafrica.com/stories/201407211545.html
JORC Code, 2012 Edition Table 1
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Section 1 Sampling Techniques and Data
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sampling | Nature and quality of sampling (eg cut | Sampling was carried out using RC |
| techniques | channels, random chips, or specific | Drilling using 1m samples. The full |
| specialised industry standard measurement | 1m interval was collected before |
|
| tools appropriate to the minerals under | being weighed then riffle spilt into | |
| investigation, such as down hole gamma | samples weighing approximately | |
| sondes, or handheld XRF instruments, etc). | 1.5kg. |
|
| These examples should not be taken as | All samples were geologically logged | |
| limiting the broad meaning of sampling. | by a suitably qualified geologist and | |
| Include reference to measures taken to | mineralized intercepts selected for | |
| ensure sample representivity and the | assay at SGS in Johannesburg | |
| appropriate calibration of any measurement | South Africa. |
|
| tools or systems used. | ||
| Aspects of the determination of | ||
| mineralisation that are Material to the Public | ||
| Report. | ||
| In cases where ‘industry standard’ work has | ||
| been done this would be relatively simple | ||
| (eg ‘reverse circulation drilling was used to | ||
| obtain 1 m samples from which 3 kg was | ||
| pulverised to produce a 30 g charge for fire | ||
| assay’). In other cases more 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 is being conducted by |
| techniques | open-hole hammer, rotary air blast, auger, | JCIL Drill. Bit diameter was 4.5 |
| Bangka, sonic, etc) and details (eg core | inches face sampling bit. | |
| diameter, triple or standard tube, depth of | ||
| diamond tails, face-sampling bit or other | ||
| type, whether core is oriented and if so, by | ||
| _what method, etc). _ | ||
| Drill sample | Method of recording and assessing core | RC Recovery was recorded by |
| recovery | and chip sample recoveries and results | weighing the recovered sample |
| assessed. | before splitting. Sample size was | |
| Measures taken to maximise sample | found to be consistent. | |
| recovery and ensure representative nature | ||
| of the samples. | ||
| Whether a relationship exists between | ||
| sample recovery and grade and whether | ||
| sample bias may have occurred due to | ||
| preferential loss/gain of fine/coarse | ||
| material. | ||
| Logging | Whether core and chip samples have been | Logging was carried out on each of |
| geologically and geotechnically logged to a | the samples including lithology, | |
| level of detail to support appropriate Mineral | amount of weathering by a suitably |
|
| Resource estimation, mining studies and | qualified geologist. | |
| metallurgical studies. | Data is initially conducted on paper | |
| Whether logging is qualitative or | logging sheets and is then | |
| quantitative in nature. Core (or costean, | transferred to excel logging sheets | |
| channel, etc) photography. | Logging is semi-quantitative based | |
| The total length and percentage of the | on visual estimation. | |
| relevant intersections logged. |
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JORC Code, 2012 Edition Table 1
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sub- | If core, whether cut or sawn and whether | RC samples were taken at 1m |
| sampling | quarter, half or all core taken. | intervals and then split into 1.5kg |
| techniques | If non-core, whether riffled, tube sampled, | samples with a reference sample |
| and sample | rotary split, etc and whether sampled wet or | also taken. |
| preparation | dry. | All RC intervals were geologically |
| For all sample types, the nature, quality and | logged and mineralized intervals |
|
| appropriateness of the sample preparation | selected for sampling at SGS in | |
| technique. | Johannesburg | |
| Quality control procedures adopted for all | Duplicate samples were taken at a | |
| sub-sampling stages to maximise | ratio of 1 in 20 by retaining the final | |
| representivity of samples. | riffle split | |
| Measures taken to ensure that the sampling | QC measures also include blank |
|
| is representative of the in situ material | samples and certified standards both | |
| collected, including for instance results for | of which are inserted at a ratio of | |
| field duplicate/second-half sampling. | 1:20. SGS also has its own internal | |
| Whether sample sizes are appropriate to | QA/QC controls to ensure assay | |
| the grain size of the material being | quality | |
| sampled. | All sampling was carefully supervised | |
| with ticket books containing pre- | ||
| numbered tickets placed in the | ||
| sample bag and double checked | ||
| against the ticket stubs and field | ||
| sample sheets to guard against mix | ||
| ups | ||
| Quality of | The nature, quality and appropriateness of | Blanks, duplicated and certified |
| assay data | the assaying and laboratory procedures | standards were inserted by the |
| and | used and whether the technique is | company at a ratio of 1:20. |
| laboratory | considered partial or total. | The samples were sent to Mwanza in |
| tests | For geophysical tools, spectrometers, | Tanzania for sample preparation |
| handheld XRF instruments, etc, the | before being were sent to South | |
| parameters used in determining the | Africa for analysis for Total Graphitic | |
| analysis including instrument make and | Carbon (TGC) using the method | |
| model, reading times, calibrations factors | GRAP_CSA05V LECO Total Carbon | |
| applied and their derivation, etc. | The TGC analysis has been carried | |
| Nature of quality control procedures | out by an industry accepted and | |
| adopted (eg standards, blanks, duplicates, | recognized laboratory - SGS | |
| external laboratory checks) and whether | TGC is the most appropriate method | |
| acceptable levels of accuracy (ie lack of | of Analysis for graphitic carbon. | |
| bias) and precision have been established. | SGS inserted its own standards and | |
| blanks. | ||
| Verification | The verification of significant intersections | Data was recorded by the sampling |
| of sampling | by either independent or alternative | geologist and stored in the |
| and assaying | company personnel. | company’s master spreadsheet. The |
| The use of twinned holes. | samples will be transported to the | |
| Documentation of primary data, data entry | SGS Lab in Mwanza for initial | |
| procedures, data verification, data storage | preparation before SGS transported | |
| (physical and electronic) protocols. | for Assay at their lab in | |
| Discuss any adjustment to assay data. | Johannesburg, South Africa. | |
| Location of | Accuracy and quality of surveys used to | A hand-held GPS was used to |
| data points | locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. |
identify the position of all samples (xy horizontal error of 5 metres) and reported using ARC 1960 grid and |
| Specification of the grid system used. | UTM datum zone 37 south. |
JORC Code, 2012 Edition
Table 1
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Quality and adequacy of topographic | ||
| control. | ||
| Data spacing | Data spacing for reporting of Exploration |
Drill spacing was carried out on |
| and | Results. | a pattern of 400m by 160m |
| distribution | Whether the data spacing and distribution is | currently only the first line is |
| sufficient to establish the degree of | completed | |
| geological and grade continuity appropriate | Whether the data spacing and |
|
| for the Mineral Resource and Ore Reserve | distribution is sufficient to | |
| estimation procedure(s) and classifications | calculate a Resource estimate is | |
| applied. | dependent on the grade | |
| Whether sample compositing has been | continuity which will be | |
| applied. | determined after assays have | |
| been received | ||
| No compositing has been |
||
| applied | ||
| Orientation | Whether the orientation of sampling | Surface mapping and interpretation |
| of data in | achieves unbiased sampling of possible | of ground EM data was used to orient |
| relation to | structures and the extent to which this is | the drill lines to get the most |
| geological | known, considering the deposit type. | unbiased sampling of the |
| structure | If the relationship between the drilling | mineralisation. |
| orientation and the orientation of key | Drilling was planned to intersect the | |
| mineralised structures is considered to | mineralization as close as possible to | |
| have introduced a sampling bias, this | right angles. Results indicate the drill | |
| should be assessed and reported if | holes intersect the mineralisation at | |
| material. | between 70-90 degrees. | |
| Sample | The measures taken to ensure sample | Transportation will occur at the |
| security | security. | completion of the program |
| Audits or | The results of any audits or reviews of | No audits or reviews have yet been |
| reviews | sampling techniques and data. | under taken |
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JORC Code, 2012 Edition Table 1
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Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | Type, reference name/number, | The prospecting license PL10718 which |
| tenement and land tenure status |
location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical |
was granted on the 18th of July 2015 for a period of four years for the exploration of Graphite. The area covered by the prospecting licenses is 239.17km2. The |
| sites, wilderness or national park | License is situated in the Ruangwa District | |
| and environmental settings. | The License is located within the Lindi | |
| 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. |
region of south-east Tanzania. The PL is held by Nachi Resources Ltd, which in turn is 100% owned by Mozambi Resources. The surface area is |
|
| administered by the Government as native | ||
| title. The area is rural, with wilderness | ||
| areas and subsistence farming occurring on | ||
| the PL. The Tenements are subject to a 3% | ||
| royalty on production to the previous | ||
| owners of Nachi Resources, which can be | ||
| reduced to 1.5% under an agreement with | ||
| the previous owner. There are no other | ||
| known issues that may affect the tenure. | ||
| Exploration | Acknowledgment and appraisal of | There is no written record of previous |
| done by other | exploration by other parties. |
exploration available for this area known to |
| parties | Mozambi Resources, The location of some | |
| graphite outcrops on the PL’s was known | ||
| by the previous owners. | ||
| Geology | Deposit type, geological setting | The exploration targets occur in the |
| and style of mineralisation. | basement rocks of the Mozambique belt | |
| system which principally comprise | ||
| metamorphic rocks ranging from schist to | ||
| gneisses including marbles, amphibolites, | ||
| graphitic schist, mica and kyanite schist, | ||
| acid gneisses, hornblende, biotite and | ||
| garnet gneisses, quartzites, granulites, and | ||
| pegmatite veins.Initial exploration has | ||
| focused on areas where there no overlying | ||
| younger sedimentary sequences remaining. | ||
| Drill hole | A summary of all information | A summary of this information including; |
| Information | material to the understanding of | eastings and northings of drill hole collars, |
| the exploration results including a | RL, dip/azimuth, down hole length and hole | |
| tabulation of the following | length are provided in table 1. | |
| information for all Material drill | ||
| holes: |
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JORC Code, 2012 Edition Table 1
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
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, | No assays are reported in this |
| aggregation | weighting averaging techniques, | Announcement |
| methods | 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 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 | Drill lines are planned to be as close as |
| between | important in the reporting of | possible to right angles to the mapped |
| mineralisation | Exploration Results. |
mineralization. |
| widths and | If the geometry of the | The width of mineralization ranges from |
| intercept | mineralisation with respect to the | close to 100% of the intercepts to |
| lengths | drill hole angle is known, its nature | approximately 85% of the interval as the |
| should be reported. | mineralization is gently folded. Closer | |
| If it is not known and only the down | spaced drilling is required to find the exact |
|
| hole lengths are reported, there | relationship. | |
| should be a clear statement to this | ||
| effect (eg ‘down hole length, true | ||
| _width not known’). _ | ||
| Diagrams | Appropriate maps and sections | A drill hole plan is provided in Figures 4 and |
| (with scales) and tabulations of | 5 showing mineralised width | |
| intercepts should be included for | A cross Section is provided in Figure 6 | |
| any significant discovery being | showing the orientation of drilling relative to | |
| reported These should include, but | the interpreted geology. |
|
| not be limited to aplan view of drill |
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JORC Code, 2012 Edition
Table 1
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| hole collar locations and | ||
| appropriate sectional views. | ||
| Balanced | Where comprehensive reporting of | No assays are reported |
| reporting | 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 Exploration Results. | ||
| Other | Other exploration data, if | Previous results from Namangale include. |
| substantive | meaningful and material, should be | Ground EM survey results have also been |
| exploration | reported including (but not limited | reported previously. The announcement |
| data | to): geological observations; | also includes a simplified geological map of |
| geophysical survey results; | the area. | |
| 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 | Exploration is now at the drilling stage with |
| further work (eg tests for lateral | the aim of defining a JORC resource in the | |
| extensions or depth extensions or | near future based in the area of the current | |
| large-scale step-out drilling). | line and at least 2 further planned lines to | |
| Diagrams clearly highlighting the | the north east and south west that will be | |
| areas of possible extensions, | drilled in the coming weeks. | |
| including the main geological | ||
| interpretations and future drilling | ||
| areas, provided this information is | ||
| not commercially sensitive. |
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