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Further encouraging Yaoure drilling results

8 Jul 2014 07:00

RNS Number : 6646L
Amara Mining PLC
08 July 2014
 

08 July 2014 AIM:AMA

 

 

 

 

 

 

 

Amara Mining plc

("Amara" or "the Company")

 

FURTHER ENCOURAGING DRILLING RESULTS FROM YAOURE GOLD PROJECT, INCLUDING 18M AT 3.6G/T

 

Amara Mining plc, the AIM-listed West African-focused gold mining company, is pleased to announce the initial diamond drill ("DD") results and further reverse circulation ("RC") results from its 2014 in-fill drilling programme at its Yaoure Gold Project ("Yaoure") in Côte d'Ivoire.

 

HIGHLIGHTS:

 

· Targeting of 'information gaps' confirms presence of mineralisation, with a significant proportion of waste expected to be converted to mineralised material

· First 26 DD results confirm the continuity of the deposit and the moderate grade nature of the Yaoure Central zone along strike and at depth, with localised high grade zones

· Significant DD intercepts include:

o 18m at 3.6g/t from 60m in hole YDD0173

o 18m at 2.9g/t from 115m in hole YDD0183

o 22m at 2.3g/t from 244m in hole YDD0184

· Results from the remaining seven RC holes in the first phase of the in-fill drilling programme continue to confirm high grade nature and continuity of the CMA zone

· Significant RC intercepts include:

o 27m at 4.4g/t from 117m in hole YRC0694

o 36m at 4.2g/t from 108m in hole YRC0698

· Five DD rigs and one RC rig now at site, expected to increase to eight DD rigs and two RC rigs in the coming weeks

· On track to deliver two Mineral Resource updates in H2 2014 to expand the current resource base and to upgrade the Inferred resources within US$950 per ounce pit design to the Indicated category

· Fully-funded to deliver a Pre-Feasibility Study ("PFS") in Q1 2015

 

John McGloin, Executive Chairman of Amara, commented:

 

"The drilling results from Yaoure increase our conviction in the accuracy of the resource model and the results from the first boreholes drilled into the 'information gaps' highlight the potential to expand Yaoure's 6.3 million ounce resource base further. I am confident that a significant proportion of waste will be converted to mineralised material, reducing the strip ratio (currently 5.2:1 in the 8Mtpa scenario) and further increasing Yaoure's strong economics. With five DD rigs and one RC rig on site, and ramping up to eight DD rigs in the near term, I believe Amara is undertaking the largest drilling campaign in Africa. I look forward to maintaining regular news flow from Yaoure over the coming months, culminating in two Mineral Resource updates in H2 2014."

 

DD programme at Yaoure

 

Fifty-two DD holes have been completed and five are in progress for a total advance since 02 May 2014 of 13,578 metres (to 03 July 2014). The results for the first 26 holes have been received and are reported in the Appendix.

 

The DD programme focuses on increasing the density of the drilling and has initially targeted 'information gaps' from the previous exploration campaigns. This is expected to allow Amara to improve its understanding of the deposit and extend the mineralised zone into the areas previously defined as waste due to a lack of information.

 

The 52 DD holes were drilled to the east of the existing Yaoure Central pit and within the pit itself to investigate the potential extension of the mineralisation between the two pits and on the western margin to further increase confidence in the Yaoure Central zone. The gold mineralisation is hosted by sheared and quartz veined basalts in the vicinity of a granodiorite intrusive. The results confirm that there is ore below the existing pit in the 'information gap' that had not previously been drilled due to lack of access caused by water in the pits (the pit has now been de-watered), which increases Amara's confidence in its ability to expand Yaoure's National Instrument ("NI") 43-101 compliant 6.3 million ounce Mineral Resource. The conversion of waste to mineralised material is also expected to have a positive impact on the project's strip ratio (currently 5.2:1 in the headline 8Mtpa scenario) and thus improve Yaoure's robust economics further. These boreholes also confirm the moderate grade nature and strong continuity of the deposit.

 

Significant intercepts from DD holes testing the Western 'information gap' (area previously defined as waste) below the middle and southern portions of the Yaoure Central pit1:

 

Borehole ID

Section

From (m)

To (m)

Interval (m)2

Au (g/t)

YDD0166

7000

48

58

10

1.31

YDD0169

7050

83

89

6

8.66

YDD0176

6800

87

94

7

1.22

YDD0177

6950

13

18

5

2.11

YDD0183

6900

115

133

18

2.853

YDD0184

6900

175

181

6

5.533

YDD0184

6900

244

266

22

2.253

YDD0184

6900

289

295

6

1.96

Notes

1. Information gap extends from 7100N to 6400N

2. Interval lengths are not true widths. Composite intersections are based on a minimum width of 2m and a cut-off of 0.40 g/t Au. Internal dilution of up to 2.00m at less than 0.40 g/t has been allowed for continuity

3. Steep cross-cutting shear zone with alteration and quartz veining

 

Significant intercepts from DD holes testing the 'information gap' between the two pits, Yaoure Central and CMA North-Central:

 

Borehole ID

Section

From (m)

To (m)

Interval (m)1

Au (g/t)

YDD0162

6800

226

235

9

2.30

YDD0164

6800

48

51

3

5.11

YDD0165

6800

137

142

5

5.02

YDD0165

6800

146

157

11

1.58

YDD0165

6800

218

225

7

3.79

YDD0167

7000

146

154

8

1.80

Notes

1. Interval lengths are not true widths. Composite intersections are based on a minimum width of 2m and a cut-off of 0.40 g/t Au. Internal dilution of up to 2.00m at less than 0.40 g/t has been allowed for continuity

 

RC programme at Yaoure

 

The first 26 RC holes (5,763 metres) were completed on 17 May 2014, focusing on the CMA zone. The CMA zone is a north-south striking, easterly-dipping, mineralised shear zone, typically 20 metres thick and located approximately 140 metres above the Yaoure Central body. The results of the first 19 holes were announced on 30 May 2014. The assay results from the remaining 7 holes have now been received and are reported in the Appendix. The results from the first phase of RC drilling confirm the continuity and high grade nature of the CMA zone, increasing Amara's confidence in the deposit.

 

Significant intercepts from RC holes drilled into the high grade CMA zone:

 

Borehole ID

Section

From (m)

To (m)

Interval (m)1

Au (g/t)

YRC0692

6950

218

229

11

3.16

YRC0694

6950

117

144

27

4.38

YRC0695

6900

103

109

6

3.11

YRC0696

7000

162

177

15

3.31

YRC0697

7100

162

172

10

3.65

YRC0698

7200

108

144

36

4.17

Notes

1. Interval lengths are not true widths. Composite intersections are based on a minimum width of 2m and a cut-off of 0.40 g/t Au. Internal dilution of up to 2.00m at less than 0.40 g/t has been allowed for continuity.

 

In conjunction with this programme, Amara conducted a statistical exercise over a limited strike length of the CMA zone (200m) to compare the resource estimates generated by the previously drilled 100m spaced holes with the newly drilled 50m spaced holes. The higher density drilling compared favourably to the previous drilling, confirming the continuity of the high grade areas and increasing the gold content.

 

A drilling map is available on Amara's website at http://www.amaramining.com/Operations/Yaoure on the page named 'Exploration', along with a series of section diagrams.

 

Amara is on track to deliver two Mineral Resource updates for Yaoure in H2 2014. The first update is expected to increase the current 4.2 million ounces within the US$950 per ounce pit design and the second is expected to upgrade the Inferred resources to the Indicated category. This will allow Amara to deliver a PFS for Yaoure in Q1 2015.

 

Background on Yaoure Gold Project

 

Amara delivered a Preliminary Economic Assessment for Yaoure in Q1 2014. It demonstrated that the project has the potential to be one of the top 10 gold mines in Africa by production and top 50 in the world. With average production of 325,000 ounces per annum over a 12 year mine life and all-in sustaining costs of US$691 per ounce, the headline 8Mtpa scenario delivers an IRR of 32% at a gold price of US$1,250 per ounce and an NPV of US$688 million. Yaoure is one of the few development projects in West Africa that remains resilient at low gold prices, with an IRR of 23% at US$1,100 per ounce. The project is flexible and delivers similarly strong returns over a range of alternative throughput scenarios. The compelling economics are driven by the excellent existing infrastructure in Côte d'Ivoire, with low cost hydro-electric power from the Kossou dam (5km from site) and a dual carriageway to within 40km of site. With 80,000 metres of drilling planned in 2014, there is expected to be strong exploration upside potential on the current NI 43-101 compliant 6.3 million ounce resource base[i].

 

For more information please contact:

Amara Mining plc

John McGloin, Chairman

Peter Spivey, Chief Executive Officer

Pete Gardner, Finance Director

Katharine Sutton, Head of Investor Relations

 

+44 (0)20 7398 1420

Peel Hunt LLP

(Nominated Adviser & Joint Broker)

Matthew Armitt

Ross Allister

 

+44 (0)20 7418 8900

GMP Securities Europe LLP

(Joint Broker)

Richard Greenfield

Alexandra Carse

 

+44 (0)20 7647 2800

 

Farm Street Communications

(Media Relations)

Simon Robinson

+44 (0)7593 340 107

 

 

About Amara Mining plc

Amara is a gold developer-producer with assets in West Africa. The Company generates cash flow through its Kalsaka/Sega gold mine in Burkina Faso. Amara is focused on unlocking the value in its development projects. At Yaoure in Côte d'Ivoire, this will be done by increasing the confidence in the existing Mineral Resource and economics at the project as the Company progresses it through to Pre-Feasibility Study and Bankable Feasibility Study. At Baomahun, this will be done by gaining an improved understanding of the exploration upside potential and underground opportunity. With its experience of bringing new mines into production and a project pipeline spanning four countries, Amara aims to further increase its production profile with highly prospective opportunities across all assets.

 

APPENDIX

 

Results of initial 26 DD holes

 

Borehole ID

Section

From (m)

To (m)

Interval (m)1

Au (g/t)

YDD0159

6800

44

46

2

0.83

YDD0159

64

67

3

0.72

YDD0159

76

78

2

0.68

YDD0160

6700

139

145

6

2.45

YDD0160

300

302

2

3.94

YDD0161

6800

229

233

4

0.92

YDD0161

242

244

2

1.55

YDD0161

273

293

20

0.91

YDD0161

310

312

2

1.06

YDD0162

6800

226

235

9

2.30

YDD0162

302

304

2

5.59

YDD0163

7000

38

40.25

2.25

0.712

YDD0163

224

226

2

0.86

YDD0163

246

248

2

0.57

YDD0163

265

268

3

1.55

YDD0163

323

325

2

3.77

YDD0163

361

380

19

0.56

YDD0164

6800

12.2

15.2

3

0.662

YDD0164

27.2

31.2

4

0.432

YDD0164

48

51

3

5.11

YDD0164

54

57

3

6.54

YDD0164

63

69

6

0.62

YDD0164

77

79

2

0.77

YDD0164

167

170

3

1.40

YDD0164

218

221

3

0.49

YDD0164

271

274

3

3.40

YDD0165

6800

31.7

43.7

12

1.20

YDD0165

87

91

4

1.48

YDD0165

137

142

5

5.02

YDD0165

146

157

11

1.58

YDD0165

195

205

10

0.67

YDD0165

218

225

7

3.79

YDD0166

7000

7.7

13

5.3

1.31

YDD0166

24

26

2

0.88

YDD0166

31

34

3

4.74

YDD0166

48

58

10

1.31

YDD0166

66

68

2

1.01

YDD0166

72

74

2

0.52

YDD0166

83

85

2

0.98

YDD0166

107

113

6

1.40

YDD0167

7000

146

154

8

1.80

YDD0167

161

165

4

1.21

YDD0167

203

206

3

0.58

YDD0168

7100

54.50

57.50

3

1.032

YDD0168

78.50

83.00

4.5

0.71

YDD0168

90.50

93.50

3

3.15

YDD0168

116.00

125.00

9

3.17

YDD0168

269.00

271.00

2

2.48

YDD0168

294.00

302.00

8

0.68

YDD0168

410.00

413.00

3

0.93

YDD0169

7050

9.50

17.00

7.5

1.60

YDD0169

41.00

44.00

3

5.19

YDD0169

83.00

89.00

6

8.66

YDD0169

104.00

108.00

4

0.85

YDD0170

7000

18.20

21.20

3

1.73

YDD0170

55.00

59.00

4

0.54

YDD0170

130.00

135.00

5

1.45

YDD0170

147.00

149.00

2

2.58

YDD0171

7050

12.50

20.00

7.5

1.31

YDD0171

48.00

51.00

3

1.33

YDD0171

126.00

128.00

2

1.47

YDD0172

6900

74.00

79.00

5

1.69

YDD0172

99.00

102.00

3

0.47

YDD0172

115.00

118.00

3

0.70

YDD0172

144.00

153.00

9

0.69

YDD0173

7200

60.00

78.00

18

3.59

YDD0173

104.00

106.00

2

1.46

YDD0173

110.00

115.00

5

2.77

YDD0173

149.00

154.00

5

0.81

YDD0173

204.00

206.00

2

0.90

YDD0173

272.00

279.00

7

1.23

YDD0173

316.00

320.00

4

0.63

YDD0173

367.00

369.00

2

1.03

YDD0173

382.00

384.00

2

2.19

YDD0174

7000

156.00

159.00

3

1.95

YDD0174

166.00

170.00

4

1.02

YDD0175

6850

51.00

59.00

8

0.57

YDD0176

6800

57.00

63.00

6

0.62

YDD0176

70.00

72.00

2

1.54

YDD0176

76.00

79.00

3

3.72

YDD0176

87.00

94.00

7

1.22

YDD0176

112.00

115.00

3

2.50

YDD0177

6950

13.00

18.00

5

2.11

YDD0177

62.00

64.00

2

1.58

YDD0177

171.00

179.00

8

1.37

YDD0178

6750

19.00

21.00

2

4.09

YDD0178

103.00

107.00

4

1.81

YDD0178

130.00

132.00

2

0.56

YDD0180

6950

53.00

58.00

5

0.50

YDD0180

145.00

149.00

4

4.30

YDD0182

7050

0.00

9.70

9.7

1.14

YDD0182

77.00

79.00

2

5.29

YDD0182

85.00

89.00

4

0.50

YDD0182

124.00

126.00

2

12.56

YDD0182

180.00

182.00

2

0.76

YDD0182

191.00

194.00

3

1.81

YDD0183

6900

85.00

94.00

9

1.13

YDD0183

99.00

104.00

5

0.61

YDD0183

115.00

133.00

18

2.853

YDD0183

140.00

146.00

6

2.143

YDD0183

158.00

162.00

4

0.49

YDD0184

6900

0.00

3.00

3

2.62

YDD0184

7.00

12.00

5

1.47

YDD0184

44.00

49.00

5

1.68

YDD0184

107.00

109.00

2

2.13

YDD0184

175.00

181.00

6

5.533

YDD0184

195.00

198.00

3

4.16

YDD0184

244.00

266.00

22

2.253

YDD0184

269.00

275.00

6

1.753

YDD0184

280.00

286.00

6

0.46

YDD0184

289.00

295.00

6

1.96

YDD0186

6950

16.00

21.00

5

0.54

YDD0186

48.00

52.00

4

1.53

YDD0186

65.00

68.00

3

1.80

YDD0186

80.00

82.00

2

0.75

YDD0186

131.00

140.00

9

0.40

YDD0186

150.00

152.00

2

3.42

YDD0188

6850

16.00

28.00

12

0.96

YDD0188

66.00

68.00

2

2.14

YDD0188

90.00

92.00

2

0.85

YDD0188

159.00

164.00

5

1.16

 

Results of remaining 7 holes from first phase of RC drilling

 

Borehole ID

Section

From (m)

To (m)

Interval (m)

Au (g/t)

YRC0692

6950

58

61

3

0.65

YRC0692

207

209

2

0.58

YRC0692

218

229

11

3.16

YRC0693

6950

232

242

4

1.44

YRC0693

247

249

2

5.43

YRC0694

6950

6

8

2

0.662

YRC0694

117

144

27

4.38

YRC0694

151

154

3

1.03

YRC0695

6900

103

109

6

3.11

YRC0695

134

136

2

1.83

YRC0696

7000

3

7

4

0.412

YRC0696

96

98

2

0.77

YRC0696

162

177

15

3.31

YRC0697

7100

162

172

10

3.65

YRC0697

189

192

3

0.80

YRC0698

7200

41

44

3

1.04

YRC0698

108

144

36

4.17

 

Notes

1. Interval lengths are not true widths. Composite intersections are based on a minimum width of 2m and a cut-off of 0.40 g/t Au. Internal dilution of up to 2.00m at less than 0.40 g/t has been allowed for continuity.

2. Steep cross-cutting shear zone with alteration and quartz veining

3. Borehole drilled into mine waste dump above CMA zone

 

Peter Brown is a "Qualified Person" within the definition of National Instrument 43-101 and has reviewed and approved the information contained within this announcement. Dr Brown (MIMMM) is the Group Exploration Manager.

 

The RC and DD drilling programmes at Yaoure are being undertaken by two independent drilling contractors. Typically samples for assaying were taken at one metre intervals. Sample preparation was carried out at the Company's facility at Yaoure, prior to fire assay at Actlabs in Ouagadougou, Burkina Faso. The samples were crushed down to minus 2mm and then pulverised down to 90% passing 75 microns, prior to analysis for gold by 50g fire assay. As part of the Company's QA/QC procedures, internationally recognised standards, duplicates and blanks were inserted. Check assays are being carried out at ALS Geochemistry in Johannesburg, South Africa. The laboratories used are independent of the Company.

 


[i] Effective date of Yaoure's Mineral Resource estimate is 11 December 2013.

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