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DRILLING SUCCESS AT PILOT MOUNTAIN PROJECT

Fri, 6th Oct 2017 09:44


RNS Number : 9269S
Thor Mining PLC
06 October 2017
 

 

6 October 2017

 

THOR MINING PLC

DRILLING SUCCESS AT PILOT MOUNTAIN TUNGSTEN PROJECT - NEVADA USA

Further to the announcement of 19 September 2017, the Board of Thor Mining Plc ("Thor" or the "Company") (AIM, ASX: THR), is pleased to advise that it has received positive laboratory assays from the recent drilling program at the Company's wholly owned Pilot Mountain tungsten project in Nevada, USA.

Highlights:

Desert Scheelite

·   A second lode 20 metres to the north of the existing Desert Scheelite lode is confirmed.

·   A down dip extension to mineralisation of 60 metres is also confirmed.

Good Hope

·   The 28 metre-wide zone of copper, zinc and tungsten mineralisation intersected near surface confirmed from laboratory assays,

·   Drill intersections 70 metres to the west of previous drilling at Good Hope have added significantly to the known strike length of this deposit.

Mr Mick Billing, Executive Chairman of Thor:

"I am very pleased to announce, what are for the Thor Mining board and operational team, exciting drill assay results from both Desert Scheelite and Good Hope.

"We have long suspected, from geophysical studies, that additional mineralised lodes exist at Desert Scheelite, and it is very rewarding to have this validated.  This is a very strong target for drill testing along the entire strike length of the existing resource with potential, if successful, to add substantially to the resource inventory'

"Additionally, the high grade and near surface mineralisation at Good Hope transforms this into a deposit with genuine potential"

"During recent meetings at the International Tungsten Industry Association conference in Moscow we have received positive feedback from a number of parties commenting on the results of our exploration work, and quality of the asset, at the Company's Pilot Mountain project."

 

 

Desert Scheelite

Significant Assays¹:

·   17DSDD02: 23.3m @ 0.21% WO3 from 198m and 15.2m @0.25% WO3 from 253.3m

¹Refer to Table 1 for complete intercept summary.

Drill hole 17DSDD-02 intersected two mineralised zones; the upper intersection represents a new second lode previously identified by geophysical targeting prior to drilling. The new second lode sits approximately 20 metres to the hanging wall (north) of the existing Desert Scheelite lode and may extend the entire strike length of the Desert Scheelite resource.

The lower 17DSDD-02 intersection represents a 60 metre down dip extension to the existing Desert Scheelite lode. This down dip extension may occur along the entire length of the resource.

 

Good Hope

Significant Assays¹:

·   17GHRC01: 26.6m @ 0.21% WO3, 1.2% Zn, 1.0% Cu from 0.8 metres downhole

·   17GHRC02: 12.2m @0.12% WO3 from 57.8m and 3m @0.37% WO3 within 8.4m @ 0.59% Cu from 80.8m.

¹Refer to Table 1 for complete intercept summary.

A 28-metre-wide zone of copper zinc and tungsten mineralisation has been confirmed beneath shallow alluvial cover at the Good Hope prospect.

Better than expected assay results for drill hole 17GHRC-02 mean a potential 70 metre strike extension of the Good Hope lode to the west at 423,870mE.

Table 1: Drill hole intercept summary

Hole ID

Easting
(NAD83
zone 11)

Northing
(NAD83
zone 11)

Elevation
(m ASL)

Azi -muth

Dip

Hole depth (m)

Intersection

Estimated true width

17DS-DD01

424458.0

4248396.1

1918

181

-73

187.6

No mineralisation intersected. Hole abandoned due to technical difficulties.


17DS-DD02

424451.9

4248399.4

1918

195.8

-69

313.0

23.3m fr 198m @ 0.21% WO3, & 0.2% Zn including 8.2m fr 198m @ 0.37% WO3 & 0.26% Zn

12m

15.2m fr 253m @ 0.25% WO3, 0.14% Zn & 0.19% Cu including 3.0m fr 265.5m @0.36% WO3

7m

17GH-RC01

423940.6

4249687.6

1956.5

180

-60

44.2

26.6m fr 0.8m @ 0.21% WO3, 1.2% Zn, 1.0% Cu including;

10.6m fr 16.7m @ 0.33% WO3, 1.1%Zn, 1.4%Cu

28m*

17GH-RC02

423868.0

4249698.0

1972

179.2

-61.5

126.5

12.2m fr 57.8m @0.12%WO3, 0.5%Zn, 0.7%Cu

11m

8.4m fr 80.8m @ 0.59%Cu (including 3m @ 0.37%WO3 fr 85.3m)

7m

(2m)

17GH-RC03

423941.9

4249668.3

1961.5

175.3

-60.1

109.7

6.9m fr 1.5m @0.38% WO3, 0.72% Zn, & 0.23% Cu

28m*

17GH-RC04

423945.0

4249703.0

1953

192.0

-61

71.6

7.6m fr 30.4m @0.36%Zn, 0.67% Cu

5m

17GH-DD01

423942.0

4249689.0

1956.4

172.5

-49

150.0

13.2m fr 15.7m @ 0.28% WO3, 1.43% Zn, 0.98% Cu

28m*


*28m estimated true width of entire lode


Enquiries:

Ray Ridge

+61 (8) 7324 1935

 

Thor Mining PLC

CFO/Company

Secretary

Colin Aaronson/

Daniel Bush/

Richard Tonthat

+44 (0) 207 383 5100

 

Grant Thornton UK LLP

 

Nominated Adviser

Elliot Hance

 +44 (0) 207382 8300

Beaufort Securities Limited

Joint Broker

Nick Emerson / Andy Thacker

+44 (0) 1483 413 500

SI Capital Ltd

Joint Broker

Tim Blythe/ Camilla Horsfall

+44 (0) 207 138 3222

Blytheweigh

Financial PR

 

Updates on the Company's activities are regularly posted on Thor's website www.thormining.com, which includes a facility to register to receive these updates by email, and on the Company's twitter page @ThorMining.

The information contained within this announcement is deemed to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014. Upon the publication of this announcement, this inside information is now considered to be in the public domain.

 

Competent Person's Report

The information in this report that relates to exploration results is based on information compiled by Richard Bradey, who holds a BSc in applied geology and an MSc in natural resource management and who is a Member of The Australasian Institute of Mining and Metallurgy.  Mr Bradey is an employee of Thor Mining PLC.  He 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 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'.  Richard Bradey consents to the inclusion in the report of the matters based on his information in the form and context in which it appears. 

 

About Thor Mining PLC

Thor Mining PLC is a resources company quoted on the AIM Market of the London Stock Exchange and on ASX in Australia.

Thor holds 100% of the advanced Molyhil tungsten project in the Northern Territory of Australia, for which an updated feasibility study in 2015¹ suggested attractive returns. Thor also holds 100% of the Pilot Mountain tungsten project in Nevada USA which has a JORC 2012 Indicated Resources Estimate² on 1 of the 4 known deposits.

Thor is also acquiring up to a 60% interest Australian copper development company Environmental Copper Recovery SA Pty Ltd, which in turn holds rights to earn up to a 75% interest in the mineral rights and claims over the portion of the historic Kapunda copper mine in South Australia recoverable by way of in situ recovery.

Thor also holds a production royalty entitlement from the Spring Hill Gold project³ of:

·   A$6 per ounce of gold produced from the Spring Hill tenements where the gold produced is sold for up to A$1,500 per ounce; and

·   A$14 per ounce of gold4 produced from the Spring Hill tenements where the gold produced is sold for amounts over A$1,500 per ounce.

Notes

·   ¹ Refer ASX and AIM announcement of 12 January 2015

·   ² Refer AIM announcement of 22 May 2017 and ASX announcement of 23 May 2017

·   ³ Refer AIM announcement of 26 February 2016 and ASX announcement of 29 February 2016

·   4 At the date of this announcement gold is trading at approximately A$1,630/oz

 

 

 

 

 

 

JORC Code, 2012 Edition - Table 1 report

Section 1 Sampling Techniques and Data

Criteria

JORC Code explanation

Commentary

Sampling techniques

·     Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as 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 ensure sample representivity and the appropriate calibration of any measurement 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.

Exploration results are based on HQ sized diamond drill core and Reverse Circulation drill cuttings.

 

Industry standard QAQC protocol was adopted with reference material inserted at 10%.

Drilling techniques

·     Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core 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).

Exploration results are based on HQ sized diamond drill core and Reverse Circulation drill cuttings.

Drill sample recovery

·     Method of recording and assessing core and chip sample recoveries and results assessed.

·     Measures taken to maximise sample 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.

Core recoveries exceed 95%

RC samples were not weighed but recoveries were generally good except for the very top of hole.

Logging

·     Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies.

·     Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography.

·     The total length and percentage of the relevant

Drill core/cuttings were logged geologically and photographed for the entire length of the hole.


Criteria

JORC Code explanation

Commentary

intersections logged.

Sub- sampling techniques and sample preparation

·     If core, whether cut or sawn and whether quarter, half or all core taken.

·     If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry.

·     For all sample types, the nature, quality and appropriateness of the sample preparation technique.

·     Quality control procedures adopted for all sub- sampling stages to maximise representivity of samples.

·     Measures taken to ensure that the 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 the grain size of the material being sampled.

Mineralised intervals of core were cut and half core sent for assay. Sample intervals were based on geological boundaries or a maximum of five feet.

 

Industry standard QAQC protocol was adopted including certified reference material, certified blanks and field duplicates making up 10% of the assay samples.

Quality of assay data and laboratory tests

·     The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total.

·     For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc.

·     Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of

accuracy (ie lack of bias) and precision have been established.

Assay laboratory operates to ISO 17025 and are accredited by the local regulatory authority.

Verification of sampling and assaying

·     The verification of significant intersections by either independent or alternative company personnel.

·     The use of twinned holes.

·     Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols.

·     Discuss any adjustment to assay data.

Not undertaken

Location of data points

·     Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation.

·     Specification of the grid system used.

·     Quality and adequacy of topographic control.

Hand held GPS

Data spacing and distribution

·     Data spacing for reporting of Exploration Results.

·     Whether the data spacing and distribution is

sufficient to establish the degree of geological and grade continuity appropriate for the Mineral

No resource estimation is implied or inferred.


Criteria

JORC Code explanation

Commentary

Resource and Ore Reserve estimation procedure(s) and classifications applied.

·     Whether sample compositing has been applied.

Orientation of data in relation to geological structure

·     Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type.

·     If the relationship between the drilling orientation and the orientation of key mineralised structures is

considered to have introduced a sampling bias, this should be assessed and reported if material.

Drilling azimuth is oriented at right angle to the interpreted strike of mineralisation. Hole inclination is appropriately for the dip of the mineralised zones (refer to sections supplied in announcement text)

Sample security

·     The measures taken to ensure sample security.

Drill samples remains in the custody of the

supervising geologist and stored in a locked building.

Audits or reviews

·     The results of any audits or reviews of sampling techniques and data.

None

 

 

 


This information is provided by RNS
The company news service from the London Stock Exchange
 
END
 
 
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