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Galileo Resources PLC RNS Release

Star Zinc Drilling Results


RNS Number : 3353K
Galileo Resources PLC
10 April 2018
 

 

 

For immediate release

 

10 April 2018

Galileo Resources Plc

("Galileo" or "the Company")

Star Zinc Drilling Results

Galileo is pleased to announce positive results* from a further seven new diamond drill holes ("DDHs") from its current drilling programme on the Zambian Star Zinc project ("Star Zinc"), in which the Company has an 85% interest.

Highlights

 

·     Completed 1,200 metres (m) drilling comprising 26 DDHs on Star Zinc to depths of between 24m to 81m downhole

 

·     DDH results again show significant widths of 'semi-massive' high-grade zinc ("Zn"), between 22m and 25m downhole in several DDHs  (see table 1 - including results previously reported 02 March 2018).

 

·     Results Include three DDH holes  (002, 012 and 014) showing exceptionally high zinc grades of between 41.51%Zn and 46.58%Zn over widths of between 7.0m and 9.0m

 

·     DDH012 showed a weighted average assay a of 23.54% Zn over a width of 22m downhole (from 23m to 45m downhole) including 30.85% Zn over 16m (from 20m to 36m), DDH014 showed 21.73% Zn over 25m (from 29m to 54m) and DDH016: 19.82% Zn over 15m (from 22m to 37m)

 

·     Continued presence of significant germanium (Ge) values, up to 29 ppm (g/t) associated with high-grade Zn mineralisation, and up to 38g/t silver (Ag) recorded in the intersections.   Germanium has been trading at  $2300/kg  ($2.3/g) b

 

·     DDHs, that targeted the periphery of the known mineralised domain, intersected zinc mineralisation - up to 6.4% Zn - in near-surface oxidised/weathered lateritic karst zones and in distinct veins or fractures

  *  all assays  subject to final  QAQC analysis

 average of regular spaced 3 point readings over the mineralised width. Whole length core samples have been submitted for independent assay by Intertek Genalysis Laboratory Services

b     05 April 2018 http://www.kitco.com/strategic-metals/ Germanium is used mainly in semiconductors in transistors and electronic, and end uses include   fibre-optic  systems,  infrared optics solar cell  applications, and  light-emitting diodes  (LEDs

 

Colin Bird, Chief Executive Officer, said:  "The results are very pleasing in that they exhibit a large zone of exceptionally high-grade zinc mineralisation.  The additional mineralisation identified in karst/laterite zones could potentially lead to a considerable bulking up of Star Zinc's  overall tonnage. Other operations have reported smelting directly willemite (zinc mineral) ore in excess of 30% zinc without processing being required other than crushing g .  Previous testwork on the project has also shown the karstic material is amenable to leaching. Another benefit is that the karst mineralisation is close to surface meaning that it is likely that this could be cheaply mined with minimal blasting. 

 

Once all results are in place we will model the various ore types and develop a 3-D model to direct drilling towards expanding the resource.

 

We are currently testing various geophysical methods against DDH core recovered from the current programme and subject to that analysis we intend to conduct a programme of geophysics in the period prior to the next drilling.

 

This initial programme and results thereof lead me to be very optimistic on the future prospects of developing a new zinc contributor."

 

g http://www.perilya.com.au/our-business/development/flinders

 

Table 1- Drilling results for semi-massive high grade DDHs in the ore body b  

Hole ID 

SZD

From

(downhole)

 

 

m

To

(downhole)

 

 

m

Width

(downhole)

 

 

m

Zn

(zinc)

weighted average c

%

Ge  (germanium)

weighted

average 

ppm

Ag

(silver)

weighted average

ppm

Gross

In situ

Value**

 

$/t rock

002

0.0

46.0

46.0

15.80

17

11

550

   Inc.

20.0

36.0

16.0

38.86 d

38 *

13

1338

   Inc.

22.0

31.0

9.0

46.58 e

45.6

9

1600

   Inc.

38.7

41.0

2.3

23.37 d

30

32

833

 

 

 

 

 

 

 

 

004

8

20.5

12.5

11.03

11.7

9

384

   Inc.

9.0

15.0

6.0

21.28 d

21.0

13

736

 

 

 

 

 

 

 

 

006

12.0

21.0

9.0

14.60

8.7

na

487

   Inc.

14.0

20.0

6.0

20.86 d

12.3

na

696

 

 

 

 

 

 

 

 

012

23.0

45.0

22.0

23.54

22.3

20

815

Inc.

27.0

43.0

16.0

30.85 d

29.0

26

1067

Inc.

34.0

43.0

9.0

42.02 e

42.0

29

1456

 

 

 

 

 

 

 

 

014

29.0

54.0

25.0

21.73

19.0

29

754

Inc.

36.0

52.0

16.0

28.83 d

25.5

15

989

   Inc.

38.0

45.0

7.0

41.51 e

35.3

6

113

 

 

 

 

 

 

 

 

016

2.0

18.0

16.0

2.42

4.1

7

90

   Inc.

22.0

37.0

15.0

19.82 d

26.1

38

714

*  the individual assays comprising the weighted average ranged from 17 to 63 ppm Ge

** the figures in this column are simply a calculation of grade multiplied by price (as set out in f below) and should not be considered a guide to the value of recoverable material at this stage  

na = not assayed

b   Analysis by Accredited Intertek Genalysis Laboratory Services:    Zn and Ge by peroxide fusion finish with  ICP-OES/MS;  Ag by 4-Acid digestion with MS. Analyses  subject QA/QC  quality assurance/checks

c     0.4% nominal Zn cut unless otherwise indicated

 d  1 0% nominal Zn cut

e   30% nominal Zn cut

 Zn $3200/t;  Ge $2300/kg;   Ag $16/oz

 

Table 2 - Results of DDH's on peripheries of the known mineralised domain targeted towards karst and laterites b

  Hole ID 

SZD

From

(downhole)

 

 

m

To

(downhole)

 

 

m

Width

(downhole)

 

 

m

Zn

(zinc)

weighted average c

%

Ge  (germanium)

weighted

average

ppm

Ag

(silver)

weighted average

ppm

Gross

In situ

Value** f

 

$/t rock

005

0.0

19.0

19.0

3.22

5.4

na

115

 

 

 

 

 

 

 

 

007

26.0

50.0

24.0

2.54

3.3

9

93

 

 

 

 

 

 

 

 

008

9.0

16.0

7.0

3.92

14.7

2

160

 

 

 

 

 

 

 

 

009

47.0

54.0

7.0

6.4

8.9

22

237

 

 

 

 

 

 

 

 

010

9.0

17.0

8.0

3.25

2.5

19

120

na = not assayed

** the figures in this column are simply a calculation of grade multiplied by price (as set out in f below) and should not be considered a guide to the value of recoverable material at this stage 

b   Analysis by Accredited Intertek Genalysis Laboratory Services:    Zn and Ge by peroxide fusion finish with   ICP-OES/MS;  Ag by 4-Acid digestion with MS. Analyses subject QA/QC quality assurance/checks

c    0.4% nominal Zn cut unless otherwise indicated

 Zn $3200/t;  Ge $2300/kg;   Ag $16/oz

 

This announcement contains inside information for the purposes of Article 7 of Regulation 596/2014.

Technical Sign-Off

 

Andrew Sarosi, Director of Galileo, who holds a B.Sc. Metallurgy and M.Sc. Engineering, University of Witwatersrand and is a member of the Institute of Materials, Minerals and Mining, is a "qualified person" as defined under the AIM Rules for Companies and a competent person under the reporting standards. The technical parts of this announcement have been prepared under Andrew's supervision and he has approved the release of this announcement.

 

This announcement contains inside information for the purposes of Article 7 of Regulation (EU) 596/2014

 

You can also follow Galileo on Twitter: @GalileoResource

 

For further information, please contact: Galileo Resources PLC

 

Colin Bird, Chairman

Andrew Sarosi, Executive Director

Tel +44 (0) 20 7581 4477

Tel +44 (0) 1752 221937

Beaumont Cornish Limited - Nomad & Joint Broker

Roland Cornish/James Biddle

Tel +44 (0) 20 7628 3396

Novum Securities Limited - Joint Broker

Colin Rowbury /Jon Belliss

+44 (0) 20 7399 9400

 

The Star Zinc Project

The Star Zinc project is a historical small-scale open pit mine from where, reportedly, low tonnage, but high grade willemite (a zinc silicate mineral) was extracted intermittently in the 1950s to 1990s.

 

The Star Zinc project is located approximately 18km NNW of Lusaka (see Figure 3.1 below), and is accessible via the tarred "Great North Road" and a good all weather graded road, with the journey time from central Lusaka of approximately 30 minutes (traffic allowing).

 

There is adequate power, water, rail & telecommunications, with the International Airport at Lusaka, less than 45 minutes away.

 

The Mines and Minerals Development Act No. 7 of 2008, which grants a Large Scale Prospecting Licence for a maximum of 7 years, governs the mineral tenement.  Recent changes to the Act now provides for an initial 4 years with a further two 3-year extensions totalling 10 years, with a mandatory 50% reduction of licence area at the completion of the 1st grant and 2nd grant periods respectively. The first renewal period initially expired 13 August 2016 but was extended to 13 August 2018.  The Company has submitted an application for the next renewal period.

 

The Star Zinc Willemite project was mapped in the 1960s by several geologists of the Northern Rhodesia (now Zambia) Geological Survey.

 

At Star Zinc, two main fracture trends are present, one E - W, and another N - S. Both sets of fractures are nearly vertical and are irregularly mineralised. Willemite generally replaces the host rock marbles in the form of massive ore bodies, but it occurs also in veins

 

In addition, karstic (pertaining to l andscape underlain by limestone which has been eroded by dissolution, producing ridges, fissures, sinkholes and other characteristic landforms) m ineralisation and red soils (terra rossa) are locally heavily mineralised with detrital willemite and supergene zinc minerals. Zinc values measured in soils at Star Zinc reach up to 15,600 ppm and are accompanied by the pathfinder elements Ag (silver), Pb (lead), Ba (barium), Sb (antimony) and Cd (cadmium). The karst infill has a zinc (Zn) content up to 45wt.% Zn, up to 35wt.% Fe and up to 5g/t Ag.

 

The mineralogical assemblage of Zn nonsulphides includes a whole number of minerals, but the main economic phases present are Zn-silicates (willemite, hemimorphite, Zn-bearing clays), Zn- Pb carbonates (smithsonite, cerussite), hydrated Zn- Pbcarbonates (hydrozincite, hydrocerussite) and Zn- Mn- Fe- oxides (zincite, franklinite, gahnite).

 

Limited independent metallurgical testwork by others has clearly shown that the willemite present at Star Zinc is amenable to acid leaching with positive results for two samples tested. Zinc leaching efficiencies obtained ranged from 89% and 92%.  The testwork indicated polymerisation of dissolved silica in the leachate.  

 

An independent competent person's report commissioned by BMR concluded. In summary, the Star Zinc project has good potential to become a viable project.

 

Note:  the information about Star Zinc is sourced primarily from Competent Person's Report for the Star Zinc Project, Zambia; Wardell Armstrong, January 2016

 

Glossary

Detrital                loose fragments or grains that have been worn away from rock

Calcite                  mineral of calcium carbonate

Dolomite              mineral composed of calcium magnesium carbonate

Dolomitic            pertaining to dolomite  

Floats                    pieces of rock that have been removed and transported from their original outcrop

Hematite             reddish-black mineral consisting of ferric oxide. It is an important ore of iron .

ICP-OES/MS       inductively coupled plasma  - optical emission spectrometery/mass spectrometery

Karstic                  pertaining to landscape underlain by limestone (calcium carbonate), which has been eroded by dissolution, producing ridges, fissures and so on

 

Leaching              chemical process of solubilising metals in rock into solution

ppm                       parts per million

XRF Spectrometer           analytical instrument for determining chemical composition using x-ray fluorescence  

 

Supergene              pertaining to processes or enrichment that occurs relatively near surface 

Willemite           zinc silicate ore mineral


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