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VOLT RESOURCES LIMITED — Regulatory Filings 2015
Oct 11, 2015
66019_rns_2015-10-11_2e2c101f-7307-4d32-b85d-7c83058d1d4e.pdf
Regulatory Filings
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ASX ANNOUNCEMENT
By e-lodgement 12 October 2015
All Fifteen Holes Drilled at the Chiwata Prospect Intercept Near Surface Graphite Mineralisation
Highlights:
-
15 holes drilled, with all holes intercepting graphite mineralisation
-
Three lines drill tested to date cover 800m of strike and mineralisation remains open to the east and to the west
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Intersected thickness of mineralisation is typically 10-20m
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Drilling targeting graphite schist unit where rock chip samples returned high proportions of large and jumbo flake graphite
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Additional exploration to continue over Mozambi’s large tenement package of 1,955km[2]
Introduction
Mozambi Resources Ltd (ASX: MOZ, “ Mozambi”, “the Company” ) is pleased to announce drilling has confirmed the presence of graphite mineralisation in all twelve holes drilled to date at the Chiwata prospect. Mineralisation is flat lying, dipping between 0 and 15 degrees and is close to the surface in the holes drilled to date. Mineralisation remains open along strike to the east and the west and down dip to the north. A further 300m of RC drilling as well as 150m of diamond drilling in planned at the Chiwata Prospect before the Company will drill test the Namangale Prospect in the coming weeks.
Managing Director Alan Armstrong said, “Mozambi Resources’s drill testing of the first target at Chiwata has confirmed a substantial area of graphite mineralisation occurring at shallow depth. Encouraging visual results have us eagerly awaiting assay results from the current round of drilling. The company also anticipates being able to confirm preliminary data that indicated the presence of large and jumbo graphite flake in the area drilled when metallurgical testing of diamond drilling samples is completed.”
Figure 1 shows the location of the Nachingwea Project tenements and the main graphite prospects. The drilling at Chiwata is planned to be used in the calculation of a JORC resource and will include 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
Chiwata RC Drilling Results
A total of 15 RC holes for 808 meters have now been drilled at the Chiwata Prospect, with all holes intersecting graphite schist mineralisation. The mineralisation tested outcrops to the south of the drilling pattern and dips gently to the north as a result the mineralised intercepts remain at a relatively shallow depths several hundred meters down dip for the outcrop. Mineralisation is open to the east and to the west of the current drilling pattern as well as down dip to the north. Drilling was designed to test the width and thickness of coarse flake graphite outcrop observed directly south of the drill pattern. A summary of the results based on visual estimation carried out during the geological logging is provided in Table 1 below.
Table 1 Graphite Intercepts Chiwata
| Hole ID | Easting | Northing | Azi/Dip | RL | Depth | From | To | Width |
|---|---|---|---|---|---|---|---|---|
| CWRC0001 | 500878 | 8830378 | 210/-60 | 597 | 46 | 0 | 6 | 6 |
| CWRC0002 | 500921 | 8830449 | 210/-60 | 606 | 49 | 0 | 4 | 4 |
| CWRC0003 | 500960 | 8830513 | 210/-60 | 598 | 31 | 5 | 12 | 7 |
| CWRC0004 | 501005 | 8830583 | 210/-60 | 625 | 60 | 22 | 35 | 13 |
| and | 41 | 44 | 3 | |||||
| CWRC0005 | 501044 | 8830647 | 210/-60 | 613 | 64 | 34 | 49 | 15 |
| CWRC0006 | 501085 | 8830712 | 210/-60 | 639 | 88 | 34 | 46 | 12 |
| CWRC0007 | 500739 | 8830921 | 210/-60 | 627 | 64 | 1 | 21 | 20 |
| and | 43 | 50 | 7 |
| CWRC0008 | 500699 | 8830853 | 210/-60 | 613 | 49 | 19 | 35 | 16 |
|---|---|---|---|---|---|---|---|---|
| CWRC0009 | 500657 | 8830770 | 210/-60 | 606 | 58 | 1 | 9 | 8 |
| CWRC0010 | 500943 | 8831270 | 210/-60 | 659 | 55 | 1 | 4 | 3 |
| and | 44 | 54 | 10 | |||||
| CWRC0011 | 500907 | 8831217 | 210/-60 | 655 | 49 | 32 | 42 | 10 |
| CWRC0012 | 500859 | 8831134 | 210/-60 | 644 | 40 | 0 | 10 | 10 |
| and | 24 | 35 | 11 | |||||
| CWRC0013 | 500822 | 8831073 | 210/-60 | 637 | 46 | 12 | 24 | 12 |
| and | 33 | 38 | 5 | |||||
| CWRC0014 | 500785 | 8831002 | 210/-60 | 630 | 52 | 20 | 27 | 7 |
| and | 39 | 44 | 5 | |||||
| CWRC0015 | 501398 | 8830472 | 210/-60 | 608 | 57 | 40 | 57 | 17 |
A map showing the location of the drill holes compared to the location of eth ground EM anomaly for the Chiwata Prospect is shown in Figure 2 below. The drilling program is designed to test the down dip extent of the outcrops mapped to the south of the drill pattern.
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Figure 2 RC Drill-Hole Location Map over the Ground EM Anomaly and Geological Mapping
Drilling Program Namangale
After the completion of drilling at Chiwata, further RC drilling is planned at the Namangale Prospect. A ground EM survey recently completed at the project generated a large conductive anomaly coincident with outcropping graphite mineralisation. The target to be tested at this prospect measures 1.8km long by 800m wide. Preparations are now well advanced to begin drilling, including the clearing of access roads to the site and drilling pads to allow drilling to commence in the coming weeks. Figure 3 shows the EM anomaly that will be targeted in the coming drilling program.
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Figure 3 EM Survey Results at the Namangale Prospect
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 are delighted with the drilling results received at the Chiwata Prospect. It has been an outstanding result to confirm a substantial area of graphite mineralisation occurring at shallow depth all within an area where preliminary metallurgical test work has confirmed Large and Jumbo flake graphite. 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.
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 80m |
| distribution | Whether the data spacing and distribution is | Whether the data spacing and |
| sufficient to establish the degree of | distribution is sufficient to | |
| geological and grade continuity appropriate | calculate a Resource estimate is | |
| for the Mineral Resource and Ore Reserve | dependent on the grade | |
| estimation procedure(s) and classifications | continuity which will be | |
| applied. | determined after assays have | |
| Whether sample compositing has been | been received | |
| applied. | 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 60-90 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 PL10644 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 9th of July 2015 for a period of four years for the exploration of Graphite. The area covered by the prospecting licenses is 198.02km2. The |
| sites, wilderness or national park | License is situated in the Ruangwa and | |
| and environmental settings. | Masasi districts. The License Straddles the | |
| 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. |
boundary of the Lindi and Mtwara regions 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 |
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JORC Code, 2012 Edition Table 1
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| 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, | 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 at right angles |
| between | important in the reporting of | to the mapped mineralization. |
| mineralisation | Exploration Results. |
The width of mineralization ranges from |
| widths and | If the geometry of the | close to 100% of the intercepts to |
| intercept | mineralisation with respect to the | approximately 85% of the interval as the |
| lengths | drill hole angle is known, its nature | mineralization is gently folded. Closer |
| should be reported. | spaced drilling is required to find the exact | |
| If it is not known and only the down | relationship. |
|
| 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 | A drill hole plan is provided in Figure 2 |
| (with scales) and tabulations of | ||
| intercepts should be included for | ||
| any significant discovery being | ||
| reported These should include, but |
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JORC Code, 2012 Edition Table 1
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| not be limited to a plan view of drill | ||
| 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 Chiwata include |
| substantive | meaningful and material, should be | trenching results grab samples and pit |
| exploration | reported including (but not limited | sample assays. Ground EM survey results |
| data | to): geological observations; | have also been reported previously. |
| 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 | Exploration is now at a 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 three | |
| large-scale step-out drilling). | lines currently being drilled. | |
| Diagrams clearly highlighting the | ||
| areas of possible extensions, | ||
| including the main geological | ||
| interpretations and future drilling | ||
| areas, provided this information is | ||
| not commercially sensitive. |
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