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High Copper Grades Confirmed in Underground Mine

2 Dec 2013 07:00

RNS Number : 3684U
Herencia Resources PLC
02 December 2013
 



2 December 2013

Herencia Resources plc

("Herencia" or "the Company")

High Copper Grades Confirmed in Underground Mine Areas at the Picachos Copper Project

Highlights:

· Numerous high-grade copper results from sampling of the '40m Shaft' workings at Picachos

· High-grade results include spot XRF grades of up to 8.7% copper

· Average spot XRF grades of 2.2% copper

· High grade copper results achieved along the entire 100 metres of underground mining area

Herencia Resources plc (AIM:HER), the Chile-focussed mineral exploration and development Company, is pleased to announce further significant high-grade copper results, this time from sampling of the '40m Shaft' underground mining area at its advanced Picachos Copper Project ("Picachos" or the "Project") in central Chile.

The '40m Shaft' mining area is located immediately north of the 'Frenchman Mine' area, with the stoping area dimension of approximately 100m in length and 3m to 5m in width, located approximately 35m to 40m below surface. There were numerous grades in the 2% to 6% copper range, with the highest grade returned being 8.7% copper. The average of the 70 XRF samples taken over the 100 metre plus length of the underground workings is 2.26% copper.

The results again confirm the pervasive nature of the high-grade mineralised 'structures' at Picachos and again support the high copper grades being reported from the processing of ore that is currently being mined at Picachos.

Significant results from the recent underground sampling program are attached in Table 1. A diagram showing the location of the '40m Shaft' mine area is available on the Company's website at www.herenciaresources.com.

Managing Director, Graeme Sloan, commented:

"What is very exciting is that the high grades were consistently achieved along the entire length of the underground working area and, importantly, high grades were also achieved at either end of the workings in the north and south faces with mineralisation open at both ends. The high grade results are located at very shallow depth and hence are an obvious target for any larger-scale open pit mining development.

Important also is that at such shallow depths the time and cost to drill the area and potentially convert into a mineral resource would be relatively modest.

We are seeking a medium to large open pit copper opportunity at Picachos, targeting structural and manto-style mineralisation with overall copper grades in the 1% to 1.5% range and the high-grade results to date are seen as very encouraging."

 

About the Picachos Project

The Picachos Project is located approximately 50km south of the coastal city of La Serena, 8km west of both the existing Andacollo copper-gold project operated by Teck Resources and the mining town of Andacollo (population approximately 10,000 people), and 10km south of the privately owned Tambillos copper mine. The Project is very well positioned for infrastructure with existing high voltage power located approximately 3km east of the Project area and serviced by two all-weather access roads.

Small scale mining is currently being undertaken by private miners via small open pit and underground mining operations. Ore is being trucked to a Chilean government owned processing plant (ENAMI plant) where it is processed. This mining will continue up until such time as the Option to fully acquire Picachos is exercised (at Herencia's discretion) and is seen by the Company as an excellent mechanism to achieve geological and grade data across many zones of mineralisation.

A review of available data and recent site visits have identified up to five separate zones of mineralisation with a combined strike length of over 8km contained within the Project area. In some areas the close relationship of these zones coupled with multiple occurrences of out-cropping wide zones of mineralisation, highlights the excellent potential for large scale open pit mining to take place at Picachos. Historic mining has focused mainly around the high grade structures, however in some areas the mantos has been mined up to 50m wide. Mineralisation generally commences from one to five metres below the surface and appears open at depth.

About Herencia

Herencia Resources plc, is an AIM quoted exploration and development company operating in Chile. In addition to the Picachos Copper Project, the Company has recently completed a Feasibility Study in relation to its 70% owned Paguanta Project, a high grade silver-zinc-lead project located in northern Chile. The Company is looking to complete project permitting for Paguanta, whilst investigating a number of potential funding alternatives in parallel with the permitting process before a development decision is made, potentially in the second half of 2014. In addition, the Company is also advancing the Guamanga Project after entering into a JV Agreement with a wholly owned subsidiary of one of Australia's largest copper miners, OZ Minerals.

For further information, please contact:

Graeme Sloan, Herencia Resources plc +61 8 9481 4204

Katy Mitchell, WH Ireland Limited +44 161 832 2174

References in this announcement to exploration results and potential have been approved for release by Mr Graeme Sloan (BAppSc Mining Engineering WASM) and Mr Antonio Valverde (Bsc Geology Universidad Complutense de Madrid), who have more than 20 years relevant experience in the field of activity concerned. Mr Sloan is a Member of the Australasian Institute of Mining and Metallurgy. Mr Sloan and Mr Valverde have consented to the inclusion of the material in the form and context in which it appears.

 

Further background details on the Company can be found at www.herenciaresources.com

**ENDS**

Table 1: Underground Samples from the '40m Shaft' analysed with Niton XL2 XRF Instrument

 

 

SAMPLE ID

EASTING

NORTHING

Cu%

OBSERVATIONS

XR-090

292678

6648693

4.49

Sulphides in limestone

XR-091

292680

6648689

1.23

Sulphides in limestone

XR-092

292683

6648686

1.10

Sulphides in limestone

XR-093

292685

6648683

0.28

Sulphides in limestone

XR-094

292687

6648679

0.32

Sulphides in limestone

XR-095

292690

6648677

2.13

Sulphides in limestone

XR-096

292692

6648673

5.93

Sulphides in limestone

XR-097

292695

6648670

4.08

Sulphides in limestone

XR-098

292698

6648667

4.34

Sulphides in limestone

XR-099

292700

6648664

1.13

Sulphides in limestone

XR-100

292703

6648661

1.76

Sulphides in limestone

XR-101

292705

6648658

0.18

Sulphides in limestone

XR-102

292704

6648654

3.60

Sulphides in limestone

XR-103

292702

6648658

2.41

Sulphides in limestone

XR-104

292700

6648661

3.46

Sulphides in limestone

XR-105

292697

6648664

2.81

Sulphides in limestone

XR-106

292696

6648666

1.79

Sulphides in limestone

XR-107

292693

6648663

0.31

Sulphides in limestone

XR-108

292696

6648660

1.71

Sulphides in limestone

XR-109

292692

6648660

1.09

Sulphides in limestone

XR-110

292690

6648663

0.04

Sulphides in limestone

XR-111

292687

6648667

2.05

Sulphides in limestone

XR-112

292689

6648668

0.08

Sulphides in limestone

XR-113

292692

6648670

8.76

Sulphides in limestone

XR-114

292690

6648674

2.34

Sulphides in limestone

XR-115

292687

6648677

6.81

Sulphides in limestone

XR-116

292684

6648680

5.32

Sulphides in limestone

XR-117

292682

6648683

3.06

Sulphides in limestone

XR-118

292680

6648686

4.66

Sulphides in limestone

XR-119

292677

6648689

5.74

Sulphides in limestone

XR-120

292696

6648659

2.47

Sulphides in limestone, South Face

XR-121

292697

6648658

2.11

Sulphides in limestone, South Face

XR-122

292696

6648657

3.28

Sulphides in limestone, South Face

XR-123

292695

6648657

0.95

Sulphides in limestone, South Face

XR-124

292694

6648658

0.57

Sulphides in limestone, South Face

XR-125

292686

6648668

4.01

Sulphides in limestone, South Face

XR-126

292686

6648669

1.95

Sulphides in limestone, South Face

XR-127

292687

6648670

2.95

Sulphides in limestone, South Face

XR-128

292688

6648669

1.02

Sulphides in limestone, South Face

XR-163

292708

6648655

2.71

Sulphides in limestone

XR-164

292706

6648651

1.30

Sulphides in limestone

XR-165

292675

6648693

0.17

Sulphides in limestone

XR-166

292672

6648696

0.81

Sulphides in limestone

XR-167

292670

6648699

4.16

Sulphides in limestone

XR-168

292674

6648698

3.83

Sulphides in limestone

XR-169

292676

6648696

1.28

Sulphides in limestone

XR-170

292711

6648651

0.72

Sulphides in limestone, South Face

XR-171

292712

6648650

1.73

Sulphides in limestone, South Face

XR-172

292711

6648648

3.21

Sulphides in limestone, South Face

XR-173

292709

6648647

1.74

Sulphides in limestone, South Face

XR-174

292707

6648648

3.20

Sulphides in limestone, South Face

XR-192

292667

6648706

1.45

Sulphides in limestone

XR-193

292663

6648703

1.78

Sulphides in limestone

XR-194

292662

6648707

1.55

Sulphides in limestone

XR-195

292658

6648710

2.49

Sulphides in limestone

XR-196

292653

6648710

2.96

Sulphides in limestone

XR-197

292655

6648712

0.43

Sulphides in limestone

XR-198

292654

6648716

0.15

Sulphides in limestone

XR-199

292651

6648717

1.39

Sulphides in limestone, North Face

XR-200

292653

6648720

2.02

Sulphides in limestone, North Face

XR-201

292656

6648722

1.10

Sulphides in limestone, North Face

XR-202

292658

6648719

1.65

Sulphides in limestone

XR-203

292660

6648717

0.18

Sulphides in limestone

XR-204

292662

6648714

1.82

Sulphides in limestone

XR-205

292665

6648712

1.33

Sulphides in limestone

XR-206

292667

6648709

0.74

Sulphides in limestone

XR-207

292665

6648707

0.62

Sulphides in limestone

XR-208

292665

6648705

1.75

Sulphides in limestone

XR-209

292668

6648703

3.74

Sulphides in limestone

XR-210

292672

6648700

3.67

Sulphides in limestone

 

· Semi-quantitative analysis with portable instrument - XRF Niton XL2

· Screening depths range up to ~0.375 inches

· The accuracy of the Niton XL2 XRF Analyser is claimed to be as accurate as any other analytical method, subject to sample homogeneity, consistency of sample/sample preparation

· Copper values correspond to average of several measurements of the same sample

· All sampling conducted by qualified Herencia geologists

 

 

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