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AVIRA RESOURCES LTD — Interim / Quarterly Report 2014
Jul 20, 2014
64473_rns_2014-07-20_a0797b5d-266d-4c81-8c5a-18a3ba40255d.pdf
Interim / Quarterly Report
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ASX Release
21 July 2014
Interim Results from Phase One of the 2014 Summer Hills Drilling Programme
ASX CODE
MGS
HIGHLIGHTS
MGT is pleased to announce assay results from the first batch of samples submitted for analysis from the 2014 Phase One drilling programme at the Summer Hills project.
REGISTRY
Computershare
These initial results are encouraging and MGT are currently awaiting the remaining assays. Results at the Summer Hill prospect are particularly promising, with a broad mineralised zone of moderate grade intersected in SH09 (20m @ 0.6% Sn from 12m including 1m @ 5.95% Sn).
SHARES ON ISSUE
288,157,040
Better intervals from the assay results received to date are:
-
20m @ 0.6% Sn from 12m (including 1m @ 5.95% Sn) (SH09; Summer Hill prospect)
-
10m @ 0.34% Sn from 45m (including 1m @ 1.03% Sn) (SH21; Summer Hill prospect)
Tin Price: US$22,072/t
-
1m @ 1.9% Sn from 16m (MAY12; Mayday prospect)
-
7m @ 1.88% Sn from 12m including 2m @ 3.6% Sn (VK17; Viking prospect)*
-
4m @ 0.45% Sn from 17m (PS06; Padstow prospect)
*The geometry of mineralisation is uncertain for these two holes. It is probable that true widths are less than the reported down-hole intercepts.
Executive Chairman and Managing Director Jonathan Back said:
“This is a promising start to our 2014 exploration campaign. The dual focus of the campaign is to first discover higher grade deposits to blend with our lower grade ore, and second, to increase our JORC tonnage. The results so far indicate long intercepts at a shallow depth. This is positive as shallow mining typically keeps extraction costs down.”
“We are eagerly anticipating the results from the remainder of the Phase One drilling programme and are pleased to inform the market that planning for a second phase of drilling has already begun.”
MGT
Resources Limited 2.05/68 York Street Sydney NSW 2000 Australia T: 61 2 9262 1122 F: 61 2 9299 5175
www.mgt.net.au [email protected]
ABN: 38 131 715 645
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OVERVIEW
MGT Resources Limited (MGT or The Company; ASX:MGS), through its 89.48% owned subsidiary MGT Mining Limited, has completed a reverse circulation percussion drilling programme on its Summer Hills mining lease (ML20547). Drilling was conducted at a number of prospects, including the historical prospects: Mayday, Summer Hill, Viking, Dalcouth and Veteran, as well as a new prospect, Padstow. The drilling programme comprised a total of 63 holes (2835m) and one extension of a preexisting hole (21m).
Results from the first batch of assays received from the ALS laboratory at Bohle are presented here (see Appendix 1). To date, results for 26 holes have been received. Figure 1 shows a plan of the drilling targets and gives some indication of the number of holes with results still pending. The results from holes for which assays have been received are promising; particularly for the Summer Hill prospect, with broad intersections of moderate grade in a number of holes (SH21: 10m @ 0.34% Sn (including 1 m @ 1.03% Sn) and SH09: 20m @ 0.6% Sn (including 1m @ 5.95% Sn) (see Figure 2).
Planning for a second phase of drilling to follow up on positive results as well as testing other prospects has already begun. Rock chip sampling programmes are being conducted on a number of historical prospects including Veteran and Tom Hood, and new areas of interest are being examined.
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Figure One : Locations of drill collars from 2014 Summer Hills Phase One drilling programme and significant results to date.
ASX RELEASE
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Figure Two: Section of new drill holes at Summer Hill Prospect showing best intersections. NB: Previously-drilled hole SH03 (2010) was sampled only every second metre; assaying of infill samples from this hole is currently in progress.
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ABOUT THE MT GARNET TIN PROJECT
MGT’s flagship Mt Garnet Tin Project is located approximately 100km (3 hours’ drive on largelysealed road) south west of Cairns in far North Queensland.
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Map 1 - Location of MGT’s Mt Garnet Project tenements within the historic Herberton Tin fields.
MGT’s Mining Lease ML 20547 (Summer Hills ML) was granted for a period of 21 years from 1[st] February 2013. The Summer Hills ML, the main tenement within MGT's flagship Mt Garnet Tin Project, is 1170 Ha in area making it one of the largest mining leases in the region. MGT’s strategy is to generate near-term cash-flow through campaign production of tin concentrates from its existing tenements. MGT sold its first shipment of tin in early 2013.
ML 20547 Contains Tin Processing Plant plus Mining and Exploration Targets
The Mt Veteran Tin processing plant is located on ML4349; wholly surrounded by the Summer Hills ML 20547. A number of tin mining and exploration targets are located within the Summer Hills ML.
Grades of up to 15.75% tin have been previously intersected in drilling on the Summer Hills mining lease. For investors unfamiliar with tin, 1% tin is approximately equivalent in value terms to 4 grams per tonne of gold or 3% copper.
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Map 2 - The Summer Hills Mining Lease contains the Mt Veteran Tin Processing Plant, dams, power, roads and a nearby skilled workforce.
Competent Person’s Statement
Information in this report related to exploration results are based on data compiled by MGT technical staff and checked by Max Rangott of Rangott Mineral Exploration Pty Ltd. Mr Rangott is a member of both the AIG and the AusIMM. Mr Rangott has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Rangott consents to the inclusion in the report of the statements based on the information in the form and context in which it appears.
Forward Looking Statements
This announcement contains forward-looking statements which involve a number of risks and uncertainties. These forward looking statements are expressed in good faith and believed to have a reasonable basis. These statements reflect current expectations, intentions or strategies regarding the future and assumptions based on currently available information. Should one or more of the risks or uncertainties materialise, or should underlying assumptions prove incorrect, actual results may vary from the expectations, intentions and strategies described in this announcement. No obligation is assumed to update forward looking statements if these beliefs, opinions and estimates should change or to reflect other future developments.
ENDS
Investor and media enquiries:
Alexander Moody Company Secretary T: +61 2 9262 1122 [email protected]
ASX RELEASE
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APPENDIX 1
SIGNIFICANT TIN INTERSECTIONS
| Hole ID | Easting | Northing | RL | Azimuth (Mag) |
Dip | Depth | From | To | Interval | Sn(%) | Intersection (Sn) (0.1% Sn cut-off) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| XRF15b | |||||||||||
| MAY11 | 305690 | 8055735 | 818 | 20 | 45 | 30 | |||||
| MAY12 | 305697 | 8055732 | 819 | 20 | 45 | 39 | 16 | 17 | 1 | 1.9 | [email protected]% |
| MAY13 | 305700 | 8055730 | 819 | 18 | 45 | 40 | 11 | 12 | 1 | 0.132 | 2m @ 0.17% |
| 12 | 13 | 1 | 0.206 | ||||||||
| MAY14 | 305681 | 8055744 | 817 | 20 | 50 | 30 | |||||
| MAY15 | 305670 | 8055749 | 815 | 20 | 50 | 33 | |||||
| MAY16 | 305691 | 8055755 | 817 | 200 | 45 | 36 | 32 | 33 | 1 | 0.153 | 4m @ 0.18% |
| 33 | 34 | 1 | 0.328 | ||||||||
| 34 | 35 | 1 | 0.068 | ||||||||
| 35 | 36 | 1 | 0.168 | ||||||||
| PS01 | 307113 | 8055674 | 758 | 57 | 47 | 30 | |||||
| PS02 | 307115 | 8055661 | 758 | 56 | 45 | 39 | |||||
| PS03 | 307124 | 8055654 | 757 | 57 | 50.5 | 33 | 2 | 3 | 1 | 0.116 | 4m @ 0.22% |
| 3 | 4 | 1 | 0.424 | ||||||||
| 4 | 5 | 1 | 0.129 | ||||||||
| 5 | 6 | 1 | 0.213 | ||||||||
| PS04 | 307131 | 8055644 | 756 | 58 | 50 | 30 | |||||
| PS05 | 307144 | 8055644 | 756 | 224 | 48 | 39 | 29 | 30 | 1 | 0.182 | 3m @ 0.28%^ |
| 30 | 31 | 1 | 0.555 | ||||||||
| 31 | 32 | 1 | 0.114 | ||||||||
| PS06 | 307146 | 8055640 | 755 | 182 | 51 | 30 | 17 | 18 | 1 | 0.5 | 4m @ 0.45%^ |
| 18 | 19 | 1 | 0.312 | ||||||||
| 19 | 20 | 1 | 0.488 | ||||||||
| 20 | 21 | 1 | 0.495 | ||||||||
| VK01 | 306173 | 8056812 | 789 | 235 | 50 | 60 | 42 | 43 | 1 | 0.344 | [email protected]% |
| VK02 | 306164 | 8056830 | 783 | 250 | 50 | 60 | |||||
| VK03 | 306151 | 8056860 | 784 | 235 | 50 | 72 | |||||
| VK04 | 306139 | 8056873 | 790 | 233 | 55 | 69 | 37 | 38 | 1 | 0.288 | [email protected]% |
| VK05 | 306128 | 8056891 | 798 | 235 | 55 | 75 | 31 | 32 | 1 | 0.541 | [email protected]% |
| VK06 | 306105 | 8056904 | 807 | 220 | 70 | 60 | 42 | 43 | 1 | 0.249 | 2m @ 0.41% |
| 43 | 44 | 1 | 0.572 | ||||||||
| VK17 | 306237 | 8056431 | 800 | 195 | 50 | 72 | 7 | 8 | 1 | 0.413 | 3m @ 0.3%^ |
| 8 | 9 | 1 | 0.114 | ||||||||
| 9 | 10 | 1 | 0.377 | ||||||||
| 12 | 13 | 1 | 1.31 | [email protected]%^ | |||||||
| 13 | 14 | 1 | 0.588 | ||||||||
| 14 | 15 | 1 | 1.835 | ||||||||
| 15 | 16 | 1 | 3.93 | ||||||||
| 16 | 17 | 1 | 3.27 |
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| 17 | 18 | 1 | 1.27 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18 | 19 | 1 | 0.961 | ||||||||
| SH08 | 305405 | 8055641 | 819 | 31 | 45 | 36 | |||||
| SH09 | 305405 | 8055641 | 819 | 31 | 75 | 36 | 3 | 4 | 1 | 0.156 | [email protected]% |
| 8 | 9 | 1 | 0.156 | [email protected]% | |||||||
| 9 | 10 | 1 | 0.473 | ||||||||
| 12 | 13 | 1 | 0.13 | 20m @ 0.6% | |||||||
| 13 | 14 | 1 | 0.882 | ||||||||
| 14 | 15 | 1 | 0.365 | ||||||||
| 15 | 16 | 1 | 0.198 | ||||||||
| 16 | 17 | 1 | 0.481 | ||||||||
| 17 | 18 | 1 | 0.138 | ||||||||
| 18 | 19 | 1 | 0.273 | ||||||||
| 19 | 20 | 1 | 0.061 | ||||||||
| 20 | 21 | 1 | 0.229 | ||||||||
| 21 | 22 | 1 | 0.335 | ||||||||
| 22 | 23 | 1 | 0.102 | ||||||||
| 23 | 24 | 1 | 0.107 | ||||||||
| 24 | 25 | 1 | 0.122 | ||||||||
| 25 | 26 | 1 | 0.18 | ||||||||
| 26 | 27 | 1 | 5.95 | ||||||||
| 27 | 28 | 1 | 0.56 | ||||||||
| 28 | 29 | 1 | 0.482 | ||||||||
| 29 | 30 | 1 | 0.319 | ||||||||
| 30 | 31 | 1 | 0.706 | ||||||||
| 31 | 32 | 1 | 0.362 | ||||||||
| SH10 | 305396 | 8055531 | 836 | 44 | 45 | 30 | |||||
| SH11 | 305387 | 8055548 | 840 | 44 | 60 | 33 | 1 | 2 | 1 | 0.354 | 1m @ 0.35% |
| SH12 | 305366 | 8055552 | 837 | 52 | 45 | 40 | 6 | 7 | 1 | 0.237 | [email protected]% |
| 7 | 8 | 1 | 0.138 | ||||||||
| 8 | 9 | 1 | 0.172 | ||||||||
| 9 | 10 | 1 | 0.205 | ||||||||
| 20 | 21 | 1 | 0.144 | [email protected]% | |||||||
| 22 | 23 | 1 | 0.106 | 2m @ 0.22% | |||||||
| 23 | 24 | 1 | 0.331 | ||||||||
| SH13 | 305374 | 8055568 | 838 | 44 | 50 | 39 | 6 | 7 | 1 | 0.957 | 2m @ 0.57% |
| 7 | 8 | 1 | 0.179 | ||||||||
| 17 | 18 | 1 | 0.482 | 1m @ 0.48% | |||||||
| SH21 | 305424 | 8055678 | 803 | 211 | 45 | 93 | 36 | 37 | 1 | 0.137 | 4m @ 0.2% |
| 37 | 38 | 1 | 0.142 | ||||||||
| 38 | 39 | 1 | 0.272 | ||||||||
| 39 | 40 | 1 | 0.25 | ||||||||
| 42 | 43 | 1 | 0.102 | 1m @ 0.1% | |||||||
| 44 | 45 | 1 | 0.232 | 10m @ 0.34% (Assays for 54- |
|||||||
| 45 | 46 | 1 | 0.176 |
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| 46 | 47 | 1 | 0.295 | 90m awaited) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47 | 48 | 1 | 0.136 | ||||||||
| 48 | 49 | 1 | 0.193 | ||||||||
| 49 | 50 | 1 | 1.03 | ||||||||
| 50 | 51 | 1 | 0.176 | ||||||||
| 51 | 52 | 1 | 0.193 | ||||||||
| 52 | 53 | 1 | 0.093 | ||||||||
| 53 | 54 | 1 | 0.914 |
*A 0.1% cut-off was used to calculate intercepts
Several of the reported intercepts include 1m intervals of internal dilution (i.e. 1m grading <0.1% Sn) provided the average grade of any 2m intercept that includes the 1m internal dilution is greater than 0.1% Sn.
^Intersections reported are downhole widths. Due to the uncertainty of the geometry of mineralisation and the orientation of some drillholes as a result of topographic constraints, true widths may be substantially less than the reported downhole intercepts; in particular VK17 (Viking Prospect) and PS05/PS06 (Padstow Prospect)
+For details on samplings and analysis methods refer to Appendix 2
APPENDIX 2
JORC CODE TABLE 1
Section 1: Sampling Techniques and Data
| Criteria | Explanation | Commentary | |
|---|---|---|---|
| Sampling techniques | Nature and quality of sampling (e.g. | cut | Phase one of the 2014 Summer Hills |
| channels, random chips, or specific | drilling program was entirely conducted |
||
| specialised industry standard |
by reverse circulation percussion drilling |
||
| measurement tools appropriate to | the | using a 125-130mm diameter hammer bit |
|
| minerals under investigation, such | as | to produce chip samples. |
|
| down hole gamma sondes, or handheld | |||
| XRF instruments, etc.) These examples | |||
| should not be taken as limiting the broad | |||
| meaning of sampling. | |||
| Include reference to measures taken to | Sample representivity was ensured by the |
||
| ensure sampling representivity and | the | following measures: |
|
| appropriate calibration of |
any | - reverse circulation percussion drilling |
|
| measurement tools or systems used. | was used to obtain bulk samples over 1m | ||
| intervals, from which 3-6kg were riffle-split | |||
| off for analysis. | |||
| - all sample was collected through a | |||
| cyclone with the 1/8thassay sample being | |||
| collected via a 1/8th– 7/8thriffle splitter | |||
| mounted beneath the cyclone | |||
| - RC chips were logged for lithology, | |||
| weathering, alteration and mineralisation | |||
| Aspects of the determination |
of | Reverse circulation drilling was used to |
|
| mineralisation that are Material to the Public Report. In cases where ‘industry |
obtain bulk samples over 1m intervals, from which 3-6kgwere split off for |
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| Criteria | Explanation | Commentary |
|---|---|---|
| standard’ work has been done this would | analysis. | |
| be relatively simple (e.g. ‘reverse |
||
| circulation drilling was used to obtain 1m | Each 1m sample was analysed at the Mt | |
| samples from which 3kg was pulverised | Veteran office using a FXL laboratory | |
| to produce a 30g charge for fire assay’). | portable X-Ray Fluorescence (XRF) |
|
| In other cases more explanation may be | machine. Anomalous samples were sent | |
| required, such as where there is coarse | to Australian Laboratory Services (ALS) | |
| gold that has inherent sampling problems. | for further analysis. | |
| Unusual commodities or mineralisation | ||
| types (e.g. submarine nodules) may | Samples sent to ALS were riffle split at | |
| warrant disclosure of detailed information. | the laboratory to obtain a sample between | |
| 2.5 and 3.2kg in weight and then | ||
| pulverised. Each sample was analysed | ||
| for Sn using an ore-grade fused disc XRF | ||
| technique (XRF15b). | ||
| Drilling techniques | Drill type (e.g. core, reverse circulation, | All drilling in 2014 Phase One was |
| open-hole hammer, rotary air blast, | conducted using a reverse circulation | |
| auger, Bangka, sonic, etc.) and details | percussion rig with face-sampling bits | |
| (e.g. core diameter, triple or standard | producing 125-130mm diameter holes. | |
| tube, depth of diamond tails, face- | Shallower holes (<75m) were drilled with | |
| sampling bit or other type, whether core is | a rig with 600cfm/300psi air capacity | |
| oriented and if so, by what method, etc.) | while deeper holes were drilled using a rig | |
| with 750cfm/350psi air capacity. An | ||
| auxiliary compressor of 900cfm/350psi | ||
| and booster of 1000psi capacity was used | ||
| for most deep holes and some of the | ||
| shallower holes. | ||
| Drill sample recovery | Method of recording and assessing core | Weights of all samples collected from the |
| and chip sample recoveries and results | cyclone are recorded over 1m intervals. | |
| assessed. | Final recoveries remain to be calculated | |
| and assessed. | ||
| Measures taken to maximise sample | All sample obtained by the face-sampling | |
| recovery and ensure representative |
drilling was collected via a cyclone | |
| nature of the samples. | attached to the drill rig with the laboratory | |
| assay sample being collected directly | ||
| beneath the cyclone using a 1/8th-7/8th | ||
| riffle splitter. | ||
| Whether a relationship exists between | Sample recoveries have yet to be | |
| sample recovery and grade and whether | calculated in order to assess whether or | |
| sample bias may have occurred due to | not any sampling bias has occurred. | |
| preferential loss/gain of fine/coarse |
||
| material. | ||
| Logging | Whether core and chip samples have | Geological logging has been carried out |
| been geologically and geotechnically | on all holes. The holes have been logged | |
| logged to a level of detail to support | for lithology, weathering, alteration and | |
| appropriate Mineral Resource estimation, | mineralisation, to allow correlation |
|
| mining studies and metallurgical studies | between holes where possible. | |
| Whether logging is qualitative or |
The logging of RC chips is both |
|
| quantitative in nature. Core (or costean, | qualitative and quantitative. Alteration, | |
| channel etc.) photography. | weathering and mineralisation data |
|
| contain both qualitative and quantitative | ||
| fields. Photographs of reference chip | ||
| trays have yet to be taken. | ||
| The total length and percentage of the | The entire length of all drill holes has | |
| Sub-sampling | relevant intersections logged. If core, whether cut or sawn and whether |
been geologically logged. OnlyRC chipsamples were taken. |
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| Criteria | Explanation | Commentary | ||
|---|---|---|---|---|
| techniques and | quarter, half or all core taken. | |||
| sample preparation | ||||
| If non-core, whether riffled, tube | sampled, | Samples were riffle split to obtain weights | ||
| rotary split, etc. and whether sampled wet | suitable for analysis at ALS. All holes | |||
| or dry. | were dry above an approximate vertical | |||
| depth of 25m. Below 25m vertical, minor | ||||
| to occasionally strong water flows were | ||||
| encountered in some prospects; however | ||||
| the drilling contractor was largely able to | ||||
| ensure a dry sample for sampling | ||||
| purposes. Less than 1% of all samples | ||||
| were affected by water. | ||||
| For all sample types, the nature, quality | The sample preparation was conducted | |||
| and appropriateness of the |
sample |
according to industry best practice. | ||
| preparation technique. | ||||
| Quality control procedures adopted for all | Quality control procedures involved use of | |||
| sub-sampling stages to |
maximise | certified reference materials and |
||
| representativity of samples. | limestone blanks inserted at regular | |||
| intervals into the assay sample sequence. | ||||
| Quality control samples are included at a | ||||
| nominal 1 sample per 15-20 assay | ||||
| samples. | ||||
| Measures taken to ensure | that the | Duplicate samples are yet to be collected. | ||
| sampling is representative of | the in situ | |||
| material collected, including for | instance | |||
| results for field duplicate/second-half |
||||
| sampling. | ||||
| Whether sample sizes are appropriate to | Assay sample weights between 2.5 and | |||
| the grain size of the material being | 3.2 kg are considered to be appropriate | |||
| sampled. | with respect to any coarse tin that may be | |||
| present. | ||||
| Quality of assay data | The nature, quality and appropriateness | Assays were conducted at ALS |
||
| and laboratory tests | of the assaying and |
laboratory | Laboratories using a fused disc XRF | |
| procedures used and whether the |
technique (method XR-15b), which is the | |||
| technique is considered partial | or total. | current industry standard for ore-grade | ||
| tin. Fused disc XRF is considered a total | ||||
| technique, as it extracts and measures | ||||
| the whole of the element contained within | ||||
| the sample. | ||||
| For geophysical tools, spectrometers, | No geophysical tools were used. | |||
| handheld XRF instruments, | etc. the | |||
| parameters used in determining the | An FXL laboratory XRF machine was | |||
| analysis including instrument | make and | used on site to identify anomalous | ||
| model, reading times, calibration factors | intervals, which were then sent for more | |||
| applied and their derivation, etc. | precise analysis at ALS. | |||
| Nature of quality control procedures | Certified geochemical standards and |
|||
| adopted (e.g. standards, |
blanks, | blank samples were inserted into the | ||
| duplicates, external laboratory | checks) | assay sample sequence at a nominal rate | ||
| and whether acceptable |
levels of |
of one QC sample per 15-20 assay | ||
| accuracy (i.e. lack of bias) and | precision | samples. Laboratory assay results for | ||
| have been established. | these quality control samples are within | |||
| 5% of accepted values. | ||||
| Verification of | The verification of significant intersections | Check assaying by a second laboratory | ||
| sampling and | by either independent or | alternative | has yet to be undertaken. | |
| assaying | company personnel. The use of twinned holes. |
No twinned holes were drilled. |
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| Criteria | Explanation | Explanation | Commentary | |||
|---|---|---|---|---|---|---|
| Documentation of primary data, data | Data is collected by qualified geologists | |||||
| entry procedures, data verifications, data | and experienced field assistants and | |||||
| storage | (physical | and | electronic) | entered into excel spreadsheets. |
||
| protocols. | Spreadsheets are then checked by on- | |||||
| site and head office geologists for | ||||||
| potential errors. | ||||||
| Data is imported into Microsoft Access | ||||||
| tables from the Excel spreadsheets with | ||||||
| validation checks set on different fields. | ||||||
| Data is then checked thoroughly by the | ||||||
| Operations Geologist for errors. Accuracy | ||||||
| of drilling data is then validated when | ||||||
| imported into MapInfo. | ||||||
| Data is stored on a server in the | ||||||
| Company’s head office, with regular | ||||||
| backups and archival copies of the | ||||||
| database made. | ||||||
| Discuss any adjustment to assay data. | No adjustments are made to the data. | |||||
| Data is imported into the database in its | ||||||
| original raw format. | ||||||
| Location of data | Accuracy and quality | of surveys used to | Drill hole collar co-ordinates were |
|||
| points | locate drill | holes (collar and | down-hole | recorded using a handheld GPS meter (+ | ||
| surveys), trenches, mine workings and | 4m accuracy). Drill collar coordinates will | |||||
| other locations used in Mineral Resource | ultimately be determined using DGPS | |||||
| estimation. | survey equipment. | |||||
| Down hole surveys were conducted on all | ||||||
| holes using a GlobalTech Pathfinder | ||||||
| downhole camera with surveys taken | ||||||
| inside a non-magnetic stainless steel drill | ||||||
| rod. | ||||||
| Specification | of the grid system used. | Coordinate system is UTM Zone 55 and | ||||
| datum is GDA94 | ||||||
| Quality and | adequacy of topographic | The Digital Terrain Model of the Summer | ||||
| control. | Hills mining lease was derived by | |||||
| photogrammetry obtained by consultant | ||||||
| surveyors with contours provided at 2m | ||||||
| intervals. | ||||||
| Data spacing and | Data spacing for reporting of Exploration | Drill holes were drilled at nominal 10 - 20 | ||||
| distribution | Results. | metre intervals dependant on the |
||||
| prospect. Where more than one hole has | ||||||
| been drilled on a section, spacing | ||||||
| between holes along the section varies | ||||||
| between 5 and 25m depending on | ||||||
| topography. | ||||||
| Whether the | data spacing and | distribution | Current hole spacing and distribution is | |||
| is sufficient | to establish the | degree of | insufficient to provide confidence in | |||
| geological | and | grade | continuity | geological and grade continuity for |
||
| appropriate for the Mineral Resource and | resource estimation purposes. | |||||
| Ore Reserve | estimation procedure(s) and | |||||
| classifications applied. | Further close spaced drilling will be | |||||
| Whether sample compositing | has been | necessary prior to calculation of a mineral resource. No sample compositinghas been applied. |
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| Criteria | Explanation | Explanation | Commentary | |
|---|---|---|---|---|
| applied. | ||||
| Orientation of data in | Whether | the orientation of sampling | With the exception of VK17 and PS06, all |
|
| relation to geological | achieves | unbiased sampling of | possible | holes have been designed to drill normal |
| structure | structures and the extent to which this is | to interpreted mineralisation trends. |
||
| known, considering the deposit type. | However, there has been insufficient | |||
| drilling and geological interpretation to | ||||
| determine if there is a bias to sampling as | ||||
| a result of drilling oblique to or downdip | ||||
| on mineralised structures. | ||||
| If the |
relationship between |
drilling |
With the exception of VK17, PS05 and |
|
| orientation and the orientation | of key | PS06, no sampling bias due to orientation |
||
| mineralised structures is considered to | has been revealed from Phase One |
|||
| have introduced a sampling bias, this | drilling results. |
|||
| should be assessed and reported if | ||||
| material. | Hole VK17 may have been drilled parallel | |||
| to and down-dip of a mineralised structure | ||||
| although the precise geometry of |
||||
| mineralisation in the vicinity of VK17 is | ||||
| poorly understood at this time. PS05 may | ||||
| have been drilled down-dip on the | ||||
| mineralised structure. PS06 was drilled | ||||
| oblique to and possibly down-dip of the | ||||
| mineralised structure. Further drilling is | ||||
| required to establish the geometry of the | ||||
| mineralisation. | ||||
| Sample security | The measures taken to endure sample | Chain of custody is managed by MGT |
||
| security. | from the drill site to Atherton. Samples | |||
| are then handed to Followmont, a local | ||||
| transport company, who transport them to | ||||
| the ALS laboratory in Townsville where | ||||
| sample preparation takes place. | ||||
| Audits or reviews | The results of any audits or reviews of | To date there has not been an audit of |
||
| _sampling _ | techniques and data. | samplingtechniques and data. |
Appendix 3 – JORC CODE TABLE 2
Section 2: Reporting of Exploration Results
| Mineral tenement and | Type, reference name/number, location |
The Mining Leases: ML20547 and |
|---|---|---|
| land tenure status | and ownership including agreements or | ML4349 are located approximately 100 |
| material issues with third parties such as | kms SW of Cairns in Northern |
|
| joint ventures, partnerships, overriding | Queensland near to the township of Mt |
|
| royalties, native title interests, historical | Garnet. The MLs are 100% owned by |
|
| sites, wilderness or national and |
MGT Mining, which is a subsidiary of |
|
| environmental settings. | MGT Resources Ltd with 89.48% |
|
| ownership. MGT has an ILUA Agreement | ||
| with the Native Title claimants in the area, | ||
| the Bar Barrum People. There are no | ||
| sites of cultural heritage significance | ||
| listed within the MLs. | ||
| The security of the tenure held at the time | ML20547 and ML4349 are held for |
|
| of reporting along with any known | periods of, respectively, 21 years and 14 |
|
| impediments to obtaining a license to | years, and both are in good standing. |
|
| Exploration done by | operate in the area. Acknowledgement and appraisal of |
The Mt Garnet-Irvinebank area is one of |
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| other parties | exploration by other parties. | exploration by other parties. | exploration by other parties. | the major tin-producing districts in |
|||
|---|---|---|---|---|---|---|---|
| Australia. Hard rock tin ore was obtained | |||||||
| from open cuts and tunnels within | |||||||
| ML20547, starting in the 1880s. In | |||||||
| addition alluvial tin was also mined on a | |||||||
| large scale; the valleys in and around | |||||||
| ML20547 have been extensively mined | |||||||
| by using mechanised equipment, but this | |||||||
| mining stopped in 1989. Throughout the | |||||||
| 1960s Noranda completed underground | |||||||
| exploration at Summer Hill, including | |||||||
| drilling six diamond holes. Tin Australia | |||||||
| NL conducted surface exploration, |
|||||||
| including rock chip sampling in the | |||||||
| 1990s.This data has not been used in | |||||||
| current calculations of grade and width. | |||||||
| Geology | Deposit type, geological setting and style | Tin mineralisation within the Summer Hills | |||||
| of mineralisation. | Mining Lease is hosted in metasediments | ||||||
| of the Hodgkinson Formation. |
|||||||
| Mineralisation is hosted in fracture |
|||||||
| networks, quartz veins and zones of | |||||||
| chlorite alteration that, in some locations, | |||||||
| occurs in proximity to rhyolite porphyry | |||||||
| dykes. Tin mineralisation, which occurs | |||||||
| as cassiterite (SnO2), also occurs |
|||||||
| disseminated through chlorite rich zones. | |||||||
| The ML is located in an area of North | |||||||
| Queensland which, historically, has been | |||||||
| mined for hardrock and alluvial tin | |||||||
| deposits. | |||||||
| Drill hole information | A summary of all | information | material to | See Appendix 1 | |||
| the | understanding of the | exploration | |||||
| results including | a tabulation | of the | |||||
| following information for all Material drill | |||||||
| holes: | |||||||
| | Easting and | northing of the | drill hole | ||||
| collar | |||||||
| | Elevation or | RL (Reduced | Level – | ||||
| elevation above sea level in metres) | |||||||
| of the drill hole collar | |||||||
| | Dip and azimuth of the hole | ||||||
| | Down hole length and | interception | |||||
| depth | |||||||
| | Hole length | ||||||
| If the exclusion | of this information is | ||||||
| justified on the basis that the | information | ||||||
| is not Material and this exclusion does not | |||||||
| detract from the | understanding | of the | |||||
| report, the Competent Person | should | ||||||
| clearly explain why this is the case. | |||||||
| Data aggregation | In | reporting | Exploration | Results, | No top-cuts have been applied. A lower | ||
| methods | weighting averaging |
techniques, | cut-off grade of 0.1% Sn has been | ||||
| maximum and/or minimum |
grade | applied in the figures and tables. Several | |||||
| truncations (e.g. cutting of high | grades) | of the reported intercepts include 1m | |||||
| and and |
cut-off grades are usually should be stated. |
Material | intervals of internal dilution (i.e. 1m grading <0.1% Sn) provided that the averagegrade of any2m intercept that |
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| includes the 1m internal dilution is greater | includes the 1m internal dilution is greater | ||
|---|---|---|---|
| than 0.1% Sn. | |||
| Where aggregate intercepts incorporate | A list of Sn values for | each metre | |
| short lengths of high grade results and | included in aggregate intercepts is shown | ||
| longer lengths of low grade results, the | in Appendix 1. In addition, | in the list of | |
| procedure used for such aggregation | best intersections, high grade intercepts | ||
| should be stated and some typical | are stated with the aggregate intercept. | ||
| examples of such aggregations be shown | |||
| in detail | |||
| The assumptions used for any reporting | No metal equivalents have been used in | ||
| of metal equivalent values should be | reporting. | ||
| clearly stated. | |||
| Relationship between | The relationships are particularly |
Due to uncertainty on the exact geometry | |
| mineralisation widths | important in the reporting of Exploration |
of mineralisation, the |
relationship |
| and intercept lengths | Results. | between true width of mineralisation and | |
| If the geometry of the mineralisation with | the length of downhole | intercepts is | |
| respect to the drill hole angle is known, its | unclear. | ||
| 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 (e.g. down | |||
| hole length, true width not known). | |||
| Diagrams | Appropriate maps and sections (with | See Fig. 1-2 and Appendix 1 | |
| scale) 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 reporting | Where comprehensive reporting of all | All exploration results have been reported | |
| Exploration Results is not practicable, | in Appendix 1; A representative section | ||
| representative reporting of both low and | has been shown in Fig. 2. | ||
| high grades and/or widths should be | |||
| practised to avoid misleading reporting of | |||
| Exploration Results. | |||
| Other substantive | Other exploration data, if meaningful and | No other data is appropriate | at this stage. |
| exploration data | material, should be reported including | ||
| (but not limited to): geological |
|||
| observations; geophysical survey results; | |||
| geochemical survey results; bulk samples | |||
| – size and method of treatment; |
|||
| metallurgical test results; bulk density, | |||
| groundwater, geotechnical and rock |
|||
| characteristics; potential deleterious or | |||
| contaminating substances. | |||
| Further work | The nature and scale of planned further | MGT is currently planning | Phase 2 of |
| work (e.g. test for lateral extensions or | 2014 drilling to test for extensions to | ||
| depth extensions or large-scale step-out | mineralisation both along | strike and | |
| drilling). | down-dip. This drilling will | also provide | |
| further information on the | geometry of | ||
| mineralisation intersected to | date. | ||
| Diagrams clearly highlighting the areas of | See Fig. 1 | ||
| possible extensions, including the main | |||
| geological interpretations and future |
|||
| drilling areas, provided this information is not commercially sensitive. |
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