Panthera Resources Bassala drilling programme identifies five significant prospects

Pantheon Resources
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Panthera Resources Plc (LON:PAT), the gold exploration and development company with assets in West Africa and India, has announced that the drilling programme, as announced as completed on 8 July 2022 at the Bassala Project in Mali has delineated five significant prospects at which drilling has identified wide zones of mineralisation.

Highlights

·    Five significant prospects defined from initial and follow-up geochemical drilling campaigns

·    The most significant prospect is the Tabakorole Prospect, with a 2km strike length with drilling having identified wide zones of mineralisation

·    The 2022 drill programme comprised  2,601m reverse circulation (RC) drilling in 23 drill holes and 3,030m air-core (AC) geochemical drilling completed in 50 drill holes

·    Significant silica-chlorite-sulphide alteration and associated quartz veining were observed for most targeted intervals

·    Drill assay results (based on 5m composite sampling) include:

5 metres at 5.60 g/t from 40m

5 metres at 4.68 g/t from 10m

5 metres at 3.73 g/t from 35m

A PDF version of the announcement, inclusive of images, can be found on the Company’s website or by following the link below:

http://www.rns-pdf.londonstockexchange.com/rns/2421Y_1-2022-9-5.pdf

pantheraresources.com/news/regulatory-news/

Introduction

The Bassala project is located within the highly gold-endowed Birimian volcano-sedimentary belt in southwestern Mali, approximately 200km south of the capital city Bamako.

The belt hosts the Kalana (Endeavour Mining, 4Moz) and Kodieran (Wassoul’or, 2Moz) gold mines, both within a few kilometres of the Bassala project.  The adjacent belt to the west is also well endowed with gold and hosts the Siguiri (AngloGold Ashanti (“AngloGold”), 17Moz), Tri-K (Avocet Mining, 3Moz), Kobada (African Gold Group, 3Moz), and Yanfolila (Hummingbird Resources, 2Moz) gold mines.

Recently the Company completed its 2022 drill programme (collar and hole information as provided in Appendix 1). The programme was designed to follow up results of earlier drilling across the three separate areas previously termed the Bassala North, Bassala Central and Bassala South Sectors.  

Panthera is pleased to report that the program was completed ahead of schedule, on budget and without any safety incidents. Preliminary analytical results have now been returned and are discussed in the ground assessment of the project data and the results of the recent drilling section of this news release. The drilling analysis reported here is preliminary due to observed coarse gold.  Further test work is underway as discussed below in this news release.

Project Background

Previously, Panthera recommenced exploration activity at Bassala in the second half of 2020, (results of gold in soil and a ground magnetic survey announced on 26 March 2021) these surveys confirmed that two major gold anomalous trends occurred, a 9-kilometre-long north-northeast trending zone and a second, cross-cutting, 3-kilometre northwest-trending zone. These zones are interpreted by the company to be continuations of significant regional mineralisation trends. 

Following the successful gold in soil and ground magnetic surveys, the Company initiated an IP gradient array survey (results announced on 10 June 2021).  The IP survey confirmed the previous interpretations and identified:

·       Several high-order chargeability highs

·       Resistivity trends associated with artisanal gold diggings

·       Many of the chargeability highs are also associated with geochemical anomalies and artisanal mining activity

Reflecting the positive results from the IP survey, the Company accelerated its drilling programme at Bassala, with an AC geochemical drilling program in 2021 as summarised below.

June 2021 Drilling (Panthera)

Reflecting the positive results from the gradient array IP survey (announced on 10 June 2021), the Company initiated its maiden drilling programme at Bassala. This was terminated in July 2021 due to the onset of the wet season with a total of 9,997m air core (AC) drilling completed in 164 drill holes and 392m reverse circulation (RC) drilling completed in 4 drill holes.

That work resulted in widespread gold mineralisation being identified in the very widely spaced drill traverses with better intercepts from the 5m composite sampling including:

·    20m @ 2.12g/t Au from 10m incl. 10m @ 3.79g/t Au from 20m

·    10m @ 3.45g/t Au from 60m incl. 6m @ 6.59g/t Au from 60m

·    5m @ 5.10g/t Au from 15m

·    5m @ 2.75g/t Au from 55m

·    45m @ 0.57g/t Au from 25m incl. 5m @ 2.53g/t Au from 40m

·    30m @ 0.88g/t Au from 20m incl. 5m @ 3.18g/t Au from 20m

·    20m @ 0.75g/t Au from 15m incl. 5m @ 1.92g/t Au from 15m

·    10m @ 0.96g/t Au from 35m incl. 5m @ 1.44g/t Au from 35m

·    25m @ 0.51g/t Au from 15m incl. 5m @ 2.07g/t Au from 20m

·    5m @ 1.98g/t Au from 40m

·    6m @ 1.59g/t Au from 70m (end of hole)

·    5m @ 1.41g/t Au from 35m (end of hole)

These were excellent initial results from the broad-spaced, drill pattern that only penetrated the base of weathering. Further details of this drilling may be found in the RNS’ dated 24 August 2021, 10 September 2021 and 30 September 2021.

December 2021 Drill Results (Panthera)

Building on the excellent results from the June 2021 drilling programme, the Company continued the drilling programme after the wet season and the phase 2 programme (mainly situated in the northern part of the license area), consisting of 8,546m of drilling in 152 AC drill holes, was completed in late December 2021.

Assay results from this drilling included the following intercepts:

·    25m @ 0.87g/t Au from surface incl. 5m @ 2.96g/t Au from 10m

·    30m @ 0.25g/t Au from 15m incl. 10m @ 0.50g/t Au from 20m

·    2m @ >8.00g/t Au from 55m at end of hole (re-assays at 3.01, 8.40 and 1.06g/t Au)

·    5m @ 1.10g/t Au from 5m

·    15m @ 0.40g/t Au from 10m incl. 5m @ 0.77g/t Au

·    5m @ 0.89g/t Au from 30m

·    16m @ 0.90g/t Au from 40m at end of hole incl. 5m @ 2.58g/t Au from 40m

·    55m @ 0.29g/t Au from 5m at end of hole incl. 5m @ 1.05g/t Au from 30m

·    5m @ 2.45g/t Au from 5m

·    1m @ 0.42g/t Au from 50m at end of hole

·    5m @ 0.92g/t Au from 55m at end of hole

·    3m @ 0.68g/t Au from 15m at end of hole

·    5m @ 0.44g/t Au from 55m at end of hole

·    5m @ 1.19g/t Au from 35m

Other Historical Exploration and RAB Drilling

Whilst the licence hosts prolific artisanal mining activity, the only significant previous systematic exploration was undertaken by AngloGold Exploration (AngloGold or AGEX) during the period 2010-2011.  That work consisted of broad-spaced soil sampling at 800m x 100m spacing with limited infill to 400m x 50m and 200m x 50m spacing in selected areas.

AngloGold subsequently undertook broad-spaced RAB drilling over the main soil anomalies and a total of 3,111m was completed in 113 drill holes at an average depth of 27.5m.  The drilling identified significant mineralisation beneath the laterite cover, including:

·    21m @ 1.15g/t Au from 15m including 3m @ 4.52g/t Au from 33m

·    15m @ 0.56g/t Au from 3m to the end of the hole

·    3m @ 0.78g/t Au from 21m to the end of the hole

·    6m @ 0.49g/t Au from 39m to the end of the hole

·    3m @ 1.55g/t Au from 9m

·    3m @ 1.16g/t Au from surface

June 2022 Drilling Results and Project Review

Following the recent June 2022 drilling campaign, the Company’s technical consultant for West Africa recently completed a site visit.  Together with our in-country technical team in Mali, a comprehensive assessment of the current drilling and previous drilling was carried out. The field assessment recognised at least five areas that the Company now categorises as prospects:

·    Tabakorole Prospect

·    Tabakorole East Prospect

·    Djelikourou North Prospect

·    Djelikourou South Prospect

·    Tagoua Prospect

All five of the identified prospects have been identified via reinterpretation of drill hole analysis, geological logging reinterpretation and walking the prospects in addition to the reinterpretation of geophysical and soil geochemical data.  Discussion of the prospects and recent drilling results follows.

Tabakorole Prospect

The Tabakorole prospect has now been defined on a significant contiguous structure of at least 2km strike length with widths interpreted between 50m to 100m.  This is based on field observations of artisanal workings, the company’s first phase of reconnaissance drilling and the recent follow-up June 2022 drilling campaign between the historical drilling, areas of artisanal diggings and trends of quartz vein rubble on the surface are noted.

Highlights of recent follow-up drilling included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-22-RC-0224060200.91Tabakorole Prospect
BA-22-RC-01690100100.73Tabakorole Prospect
BA-22-AC-361015150.22Tabakorole Prospect
BA-22-AC-3634555100.24Tabakorole Prospect
BA-22-RC-0243545100.38Tabakorole Prospect

Previous drilling by Panthera in the Tabakorole prospect included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-21-AC-090606550.55Tabakorole Prospect
BA-21-AC-094263590.32Tabakorole Prospect
BA-21-AC-0801440260.45Tabakorole Prospect
INC263041.59Tabakorole Prospect
BA-21-AC-0811939200.92Tabakorole Prospect
INC212322.96Tabakorole Prospect
BA-21-AC-07251051.02Tabakorole Prospect
BA-21-AC-073404551.59Tabakorole Prospect
BA-21-AC-0746070103.19Tabakorole Prospect
BA-21-AC-066202551.08Tabakorole Prospect
BA-21-AC-0672040200.57Tabakorole Prospect
BA-21-AC-0697585100.23Tabakorole Prospect

Tabakorole East Prospect

The Company identified this prospect for initial testing after noting gold in historical RAB drilling carried out by AGEX. Initial follow-up using soil geochemistry outlined a broad area of plus 20ppb Au. Field mapping also located scattered artisanal diggings for gold.

Gradient array IP geophysics carried out over the prospect highlights a thickening of a conductive rock unit that was initially thought to be due to the presence of disseminated sulphide and was the target of the Company’s maiden drilling programs that successfully located highly anomalous geochemical values for gold.

The recent field review has identified the conductivity anomaly to be caused by considerable amounts of graphite in the underlying schists.  It is postulated that the thickening of the graphitic schist unit may be due to structural folding and or faulting of the softer graphitic schist. The Company’s shallow geochemical (AC) drilling appears to have also identified shallow flat-lying supergene style mineralisation. Several deeper holes may have located underlying vein-style structures.

Panthera recently commissioned a specialist spectral imagery study using reflective wavelengths collected by various satellites.  Of interest is that an anomaly is located over the Tabakorole East prospect that has a similar spectral signature to that observed over the nearby Kodieran (Wassoul’or, 2Moz) gold mine.

Highlights of recent follow-up drilling included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-22-AC-3772040200.33Tabakorole East Prospect
BA-22-AC-3790550.39Tabakorole East Prospect
AND455380.16Tabakorole East Prospect
BA-22-AC-380556050.57Tabakorole East Prospect
BA-22-AC-382202550.53Tabakorole East Prospect
BA-22-AC-353606550.20Tabakorole East Prospect
BA-22-AC-354520150.32Tabakorole East Prospect
BA-22-AC-355202550.49Tabakorole East Prospect
BA-22-RC-0212030100.32Tabakorole East Prospect
BA-22-AC-357101554.68Tabakorole East Prospect
AND2545200.27Tabakorole East Prospect
BA-22-AC-358354053.73Tabakorole East Prospect
BA-22-AC-364101550.31Tabakorole East Prospect
BA-22-AC-365202550.13Tabakorole East Prospect
BA-22-AC-367101550.70Tabakorole East Prospect
AND354050.61Tabakorole East Prospect
BA-22-AC-3686062(EOH)20.31Tabakorole East Prospect
BA-22-AC-369152051.25Tabakorole East Prospect
AND556050.56Tabakorole East Prospect
BA-22-AC-370455050.67Tabakorole East Prospect
BA-22-AC-373202550.67Tabakorole East Prospect
BA-22-AC-375253050.54Tabakorole East Prospect
BA-22-AC-376253050.24Tabakorole East Prospect
BA-22-AC-367101550.70Tabakorole East Prospect
AND354050.61Tabakorole East Prospect
BA-22-AC-3686062(EOH)20.31Tabakorole East Prospect
BA-22-AC-369152051.25Tabakorole East Prospect
AND556050.56Tabakorole East Prospect
BA-22-AC-370455050.67Tabakorole East Prospect
BA-22-AC-373202550.67Tabakorole East Prospect
BA-22-AC-375253050.54Tabakorole East Prospect
BA-22-RC-017101550.70Tabakorole East Prospect
AND657050.22Tabakorole East Prospect
AND105115100.62Tabakorole East Prospect
BA-22-RC-0187590150.29Tabakorole East Prospect

Previous drilling by Panthera in the Tabakorole East prospect included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-21-AC-266394121.11Tabakorole East Prospect
BA-21-AC-2680550.53Tabakorole East Prospect
BA-21-AC-270202550.57Tabakorole East Prospect
BA-21-AC-2693045150.14Tabakorole East Prospect
BA-21-AC-290101550.86Tabakorole East Prospect
BA-21-AC-291101550.20Tabakorole East Prospect
BA-21-AC-012505550.14Tabakorole East Prospect
BA-21-AC-01651050.14Tabakorole East Prospect
BA-21-AC-017121750.27Tabakorole East Prospect
AND233070.86Tabakorole East Prospect
BA-21-RC-0020221.27Tabakorole East Prospect
BA-21-RC-003101330.46Tabakorole East Prospect
AND172030.43Tabakorole East Prospect
AND444510.56Tabakorole East Prospect
AND9910010.57Tabakorole East Prospect
BA-21-RC-004233290.87Tabakorole East Prospect
BA-21-AC-065152055.02Tabakorole East Prospect
AND3550150.42Tabakorole East Prospect
BA-21-AC-0201535200.75Tabakorole East Prospect
BA-21-AC-0212540150.44Tabakorole East Prospect
BA-21-AC-0642050300.86Tabakorole East Prospect
BA-21-AC-0223050200.73Tabakorole East Prospect
BA-21-AC-03251051.31Tabakorole East Prospect
BA-21-AC-033152051.62Tabakorole East Prospect
BA-21-AC-049101550.53Tabakorole East Prospect
AND253050.92Tabakorole East Prospect
AND4050101.63Tabakorole East Prospect
BA-21-AC-051303550.28Tabakorole East Prospect
AND556052.75Tabakorole East Prospect
BA-21-AC-0421525100.37Tabakorole East Prospect
BA-21-AC-054505550.53Tabakorole East Prospect
BA-21-AC-05551050.84Tabakorole East Prospect
BA-21-AC-056141512.56Tabakorole East Prospect
BA-21-AC-053455050.74Tabakorole East Prospect
BA-21-AC-058253050.72Tabakorole East Prospect
BA-21-AC-060520150.22Tabakorole East Prospect
AND455050.50Tabakorole East Prospect
AND707550.49Tabakorole East Prospect
BA-21-AC-062293121.14Tabakorole East Prospect

Djelikourou North Prospect

The prospect was initially located after field reconnaissance in 2018 identified scattered artisanal diggings.  Subsequent exploration work included soil sampling that reported elevated gold values above 20ppb Au that overlay a trend identified in the gradient array IP survey data.  The geophysical trend appears to be the edge of a chargeability anomaly and a resistivity trend.

Recent fieldwork identified the chargeability high as due to the presence of a graphitic schist unit. Subsequent geochemical air core drilling and several follow-up RC drill holes have returned encouraging results as indicated in the following tables of drill intersections including a 35m gold intersection (BA-22_RC-012).

Highlights of recent follow-up drilling included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-22-RC-0125590350.69Djelikourou North Prospect
INC7080101.00Djelikourou North Prospect
BA-22-RC-01065120550.21Djelikourou North Prospect
INC657050.97Djelikourou North Prospect
AND105115100.34Djelikourou North Prospect

Previous drilling by Panthera in the Djelikourou North prospect included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-21-AC-27651052.30Djelikourou North Prospect
BA-21-AC-2483555200.33Djelikourou North Prospect
BA-21-AC-25051052.53Djelikourou North Prospect
BA-21-AC-2591030202.11Djelikourou North Prospect
BA-21-AC-2621525100.65Djelikourou North Prospect

Djelikourou South Prospect

The prospect was located after initial field reconnaissance in 2018 and identified scattered artisanal diggings.  Subsequent exploration included a soil sampling programme which reported elevated gold values including a plus 100ppb Au anomaly that overlies the trend identified in the gradient array IP survey data. Subsequent geochemical air core drilling and several follow-up RC drill holes have returned encouraging results as indicated in the following tables of drill intersections.

Highlights of recent follow-up drilling included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-22-RC-0252030100.13Djelikourou South Prospect
BA-22-RC-0139510050.22Djelikourou South Prospect
BA-22-RC-0140551.4Djelikourou South Prospect

Previous drilling by Panthera in the Djelikourou South Prospect included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-21-AC-1062627(EOH)12.11Djelikourou South Prospect
BA-21-AC-1072070500.35Djelikourou South Prospect
BA-21-AC-1245565100.28Djelikourou South Prospect
BA-21-AC-140151940.61Djelikourou South Prospect
AND303550.21Djelikourou South Prospect
AND737632.12Djelikourou South Prospect

Tagoua Prospect

The prospect was located after field reconnaissance in 2018 and identified scattered artisanal diggings with subsequent soil sampling showing elevated gold values including a plus 60ppb Au anomaly.  Further gradient array IP survey data inferred a possible structural control of the geochemistry. Subsequent geochemical air core drilling and several follow-up RC drill holes have returned encouraging results as indicated in the following tables of drill intersections.

Highlights of recent follow-up drilling included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-22-AC-341535300.30Tagoua Prospect
BA-22-AC-339404555.60Tagoua Prospect
BA-22-AC-337556050.36Tagoua Prospect
BA-22-AC-3452030100.16Tagoua Prospect
BA-22-AC-34651050.30Tagoua Prospect
AND4050100.26Tagoua Prospect
AND657050.20Tagoua Prospect

Previous drilling by Panthera in the Tagoua prospect included:

HOLE IDMETRES FROMMETRES TOINTERVAL (M)Au PPMPROSPECT
BA-21-AC-1011535200.40Tagoua Prospect
BA-21-AC-148520150.19Tagoua Prospect
BA-21-AC-149515100.21Tagoua Prospect
BA-21-AC-1370550.74Tagoua Prospect
AND101552.96Tagoua Prospect
AND202550.48Tagoua Prospect
BA-21-AC-16655583(EOH)8.00Tagoua Prospect
BA-21-AC-17351051.11Tagoua Prospect

Analytical Test Work

Reflecting a course coarse gold distribution, the Company completed repeat fire assays on selected samples at SGS and Bureau Veritas with the results detailed below.  Furthermore, the Company is undertaking selected bulk assays with SGS Leachwell method with the results pending. Recommendations for further sampling and analytical work will be made when all test work is completed.

Sample_IDORIGINAL ASSAY SGS MALI

Au_ppb
ORIGINAL ASSAY SGS MALI

Au_ppm
REPEAT ASSAY SGS MALI

Au_ppb
REPEAT ASSAY SGS MALI

Au_ppb
REPEAT ASSAY SGS MALI

Au_ppb
Bureau Veritas Mineral Laboratories Mali

Au_ppb
Bureau Veritas Mineral Laboratories Mali

Au_ppm
AC57653590.36273358
AC579156005.661402970
AC58132090.21145444
AC58213050.31307250
AC58303560.36271586
AC58342010.26331136
AC58632670.27262509
AC5864130.01108
AC5865180.021111<5
AC5866480.05116
AC5867290.0312<5
AC5874320.033514
AC5968150.0212125
AC6002100.0186
AC6031130.0114<5
AC60604910.49891479
AC607046804.68>8000>8000>1000031.2
AC609037303.7325302601
AC61237020.7712552
AC61296100.61815659
AC615312501.251360735
AC61615610.56513912
AC61746680.671012
AC62116680.67217207448
AC62375360.54384169
AC62502350.24289464
AC62583110.3195733

Commenting on the announcement, Mark Bolton, Managing Director of Panthera Resources said:

“Panthera’s technical consultant visited the projects with our Mali technical team and carried out an on-the-ground assessment of the project data and the results of the recent drilling.  We were able to delineate at least 5 areas as prospects, the Tabakorole Prospect being a significant structure that we walked over a 2km strike length noting areas of old artisanal diggings, trends of vein rubble on the surface and drilling of near-surface targets having identified wide zones of mineralisation, the continuous nature of the structure over at least 2km is a significant target for mineralisation below the possibly depleted surface regolith profile

We are pleased with the results of the recent drilling at Bassala with five prospects identified for follow-up infill drilling.  In particular, at the Tabakorole Prospect, a significant mineralised structure has been delineated over more than two kilometres.

The next phase at the Bassala project will comprise detailed infill RC drilling to identify potential resources.”

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