|  |
Chirano
January 2008
Gold Production
The Company had record gold production in 2007, producing 127,196 oz at Chirano and 20,812 oz at Tasiast, for total gold production of 148,008 oz. Production levels at both Tasiast and Chirano will increase in 2008 and beyond with expansions at both projects and with the development of the Akwaaba Deeps underground operation at Chirano. It is estimated that the Company will produce approximately 245,000 oz in 2008 (135,000 oz at Chirano and 110,000 oz at Tasiast). For 2009, total production is estimated at 350,000 oz upon completion of the plant expansion projects. By 2010, Red Back is aiming to produce in excess of 400,000 oz per annum from Chirano and Tasiast.
Chirano Plant Expansion
The Chirano plant expansion is progressing well with some significant milestones having been achieved during the holiday period.
Lycopodium Pty Ltd, the EPCM contractor for the original construction of the Chirano plant, has been awarded an EPCM contract for the plant expansion. The new EPCM contract covers all major work items for the expansion, including an additional ball mill and cyclone cluster, conversion of existing tails thickener to leach feed thickener, the installation of an additional elution column and electrowinning cells and upgrades to tailings pumps, reagent mixing, instrumentation and services. In late 2007, the Company purchased a new ball mill which will be shipped to Ghana from Australia in the first quarter of 2008.
It is anticipated that the Chirano plant expansion will be completed and commissioned early in the first quarter of 2009.
A separate EPCM contract has been awarded to Sandvik Mining and Construction for the upgrading of the Chirano crushing system. The installation of tertiary crushing will reduce the diameter of the ore feed to the mill, maximizing milling throughput. This installation is expected to be complete by the end of the third quarter. Additional temporary mobile crushing capacity was added at the end of 2007 to provide sufficient mill feed during the period that the new, permanent crushing circuit is constructed.
Akwaaba Deeps Development
The box cut and portal preparation for the decline development at Akwaaba Deeps is well underway with completion expected shortly. Barminco Pty Ltd, a leading Australian underground development company, has been awarded a letter of intent by the Company as the preferred contractor for the underground development at Akwaaba Deeps. Barminco is mobilizing to site, with decline development scheduled to commence in April 2008. It is anticipated that first ore from Akwaaba Deeps will be fed to the plant in the fourth quarter of 2008.
Exploration
Chirano
Drilling at Chirano is currently focused on infill drilling at Akwaaba Deeps. To date 8 holes (4,272m) have been completed with 5 holes (2,240m) remaining in the program. Recent results continue to confirm the potential of Akwaaba Deeps:
Hole |
From (m) |
To (m) |
Length (m) |
Au (g/t) |
Comment |
CHRC1245D |
437.2 |
474.65 |
37.45 |
18.89 |
|
including |
437.2 |
442.6 |
5.4 |
9.42 |
|
and |
442.6 |
455 |
12.4 |
32.3 |
Black Breccia |
and |
455 |
474.65 |
19.65 |
13.04 |
|
CHRC1251D |
550.00 |
586.65 |
36.65 |
13.27 |
|
CHDD1253 |
341.65 |
360.00 |
18.35 |
2.29 |
|
and |
378.60 |
397.40 |
18.80 |
4.07 |
|
and |
407.89 |
425.10 |
17.21 |
5.85 |
ended in mineralization |
CHRC1257D |
607.88 |
631.84 |
23.96 |
3.84 |
|
CHDD1262 |
234.00 |
257.10 |
23.10 |
4.23 |
|
and |
266.60 |
280.00 |
13.40 |
3.39 |
|
and |
282.50 |
296.00 |
13.50 |
9.74 |
|
CHDD1265 |
399.00 |
457.00 |
58.00 |
9.54 |
|
including |
428.31 |
439.70 |
11.39 |
30.32 |
|
and including |
433.25 |
437.54 |
4.29 |
35.84 |
Black Breccia |
CHDD1268 |
304.00 |
337.00 |
33.00 |
7.95 |
|
including |
309.56 |
333.45 |
23.89 |
10.30 |
|
CHDD1276 |
386.00 |
413.90 |
27.90 |
18.46 |
|
including |
391.00 |
394.00 |
3.00 |
49.90 |
Black Breccia |
Note: True width is approximately 75% of drilled width.
These new results demonstrate the impressive conversion of inferred resources at Akwaaba Deeps. More significantly, this recent program has again intercepted the very high grade "Black Breccia" which appears to represent a distinct structural unit within the mineralised envelope of Akwaaba Deeps. These new intercepts will allow further detailed targeting of the "Black Breccia" towards a potential further increase in the resources and reserves at Akwaaba Deeps
A revised Mineral Resource and Ore reserve calculation for Akwaaba Deeps is scheduled for completion before the end of the first quarter 2008.
Click here to go back
Akoti Extended & Akoti North Drill Results
Pit |
Hole |
From |
To |
Metres |
Au g/t |
Akoti Extended |
CHRC825D |
254 |
261 |
7.00 |
3.80 |
CHRC360 |
98 |
101 |
3.00 |
13.70 |
CHRC597 |
179 |
182 |
3.00 |
5.18 |
CHRC984 |
54 |
68 |
14.00 |
11.08 |
CHRC059 |
144 |
147 |
3.00 |
3.55 |
CHRC208 |
140 |
156 |
16.00 |
8.72 |
CHRC209 |
81 |
99 |
18.00 |
6.59 |
CHRC113 |
92 |
107 |
15.00 |
4.22 |
CHRC600 |
168 |
178 |
10.00 |
4.67 |
CHRC058 |
141 |
145 |
4.00 |
4.24 |
CHRC206 |
95 |
98 |
3.00 |
4.42 |
CHRC980 |
64 |
73 |
9.00 |
3.64 |
CHRC1191 |
140 |
178 |
38.00 |
7.41 |
CHRC1192 |
147 |
177 |
30.00 |
3.00 |
including |
168 |
174 |
6.00 |
5.73 |
CHRC1194 |
102 |
155 |
53.00 |
6.27 |
including |
143 |
150 |
7.00 |
9.76 |
CHRC1197D |
266 |
277 |
11.00 |
3.54 |
CHRC1198 |
205 |
227 |
22.00 |
9.30 |
CHRC1206 |
237 |
246 |
9.00 |
3.17 |
CHRC1217 |
117.00 |
124.00 |
7.00 |
4.76 |
CHRC1227D |
354.00 |
367.00 |
13.00 |
4.50 |
CHRC1228 |
209.00 |
220.00 |
11.00 |
2.85 |
CHRC1229D |
231.90 |
236.00 |
4.10 |
13.48 |
CHRC1231D |
120.00 |
123.00 |
3.00 |
4.51 |
CHRC1232 |
162.00 |
172.00 |
10.00 |
3.01 |
CHRC1233 |
139.00 |
147.00 |
8.00 |
2.15 |
CHRC1234 |
138.00 |
149.00 |
11.00 |
9.31 |
CHRC1235 |
216.00 |
221.00 |
5.00 |
11.61 |
CHRC1236 |
265.00 |
282.00 |
17.00 |
2.36 |
CHRC1237 |
125.00 |
140.00 |
15.00 |
3.37 |
CHRC1258 |
141.00 |
147.00 |
6.00 |
5.77 |
Akoti North |
CHRC554 |
218 |
227 |
9.00 |
3.29 |
CHRC555 |
151 |
169 |
18.00 |
5.02 |
CHRC556 |
159 |
167 |
8.00 |
4.02 |
CHRC557 |
141 |
147 |
6.00 |
3.26 |
plus |
122 |
130 |
8.00 |
4.06 |
CHRC559 |
209 |
222 |
13.00 |
5.95 |
CHRC204 |
136 |
162 |
26.00 |
5.49 |
CHRC824D |
339.25 |
353 |
13.75 |
3.75 |
CHRC1183D |
293.00 |
313.72 |
20.72 |
2.40 |
CHRC1184D |
287.50 |
312.00 |
24.50 |
3.83 |
CHRC1185D |
255.00 |
266.70 |
11.70 |
3.26 |
CHRC1187D |
239.00 |
263.60 |
24.60 |
2.04 |
CHRC1189D |
160.80 |
177.00 |
16.20 |
2.70 |
incl |
172.50 |
177.00 |
4.50 |
5.47 |
CHRC1192 |
147.00 |
175.00 |
28.00 |
3.05 |
incl |
157.00 |
162.00 |
5.00 |
5.14 |
and |
168.00 |
174.00 |
6.00 |
5.73 |
Note: Results in italics have been previously reported.
True widths are on average 60% of drilled width.
Click here to go back
Suraw Drill Results
Pit |
Hole |
From |
To |
Metres |
Au g/t |
Suraw |
CHRC065 |
63 |
71 |
8.00 |
6.90 |
CHRC1036 |
83 |
90 |
7.00 |
5.00 |
CHRC1038 |
81 |
88 |
7.00 |
7.41 |
CHRC1047 |
116 |
123 |
7.00 |
6.15 |
CHRC1071 |
105 |
112 |
7.00 |
8.87 |
CHRC1074 |
77 |
86 |
9.00 |
7.10 |
CHRC1089 |
134 |
146 |
12.00 |
8.21 |
CHRC1093 |
203 |
211 |
8.00 |
8.97 |
CHRC1094 |
116 |
123 |
7.00 |
6.73 |
CHRC1097 |
203 |
213 |
10.00 |
5.59 |
CHRC1100 |
206 |
214 |
8.00 |
2.61 |
CHRC1199D |
352 |
362.25 |
10.25 |
5.59 |
CHRC1200D |
176.3 |
183.8 |
7.50 |
3.53 |
CHRC1201D |
124.1 |
134.3 |
10.20 |
6.33 |
including |
126 |
128.9 |
2.90 |
15.22 |
CHRC1213D |
251 |
260.4 |
9.40 |
3.71 |
and |
266.9 |
279.15 |
12.25 |
4.91 |
CHRC1216D |
143 |
149 |
6.00 |
5.65 |
CHRC1225 |
220 |
242 |
22.00 |
1.94 |
CHRC1238D |
431.9 |
436.5 |
4.60 |
3.80 |
CHRC1238D |
445 |
450 |
5.00 |
3.84 |
CHRC1238D |
518 |
526 |
8.00 |
2.32 |
CHRC1239D |
408.1 |
416 |
7.90 |
3.24 |
CHRC1240D |
216 |
236 |
20.00 |
3.18 |
including |
218 |
222 |
4.00 |
9.68 |
CHRC1241 |
154 |
166 |
12.00 |
3.42 |
CHRC1242 |
105 |
115 |
10.00 |
3.86 |
CHRC1243 |
224 |
236 |
12.00 |
5.83 |
including |
224 |
229 |
5.00 |
10.47 |
CHRC1246D |
165.4 |
172.05 |
6.65 |
3.01 |
CHRC1247 |
127 |
137 |
10.00 |
3.78 |
CHRC1248 |
164 |
170 |
6.00 |
7.58 |
CHRC1249D |
266.5 |
276.8 |
10.30 |
7.57 |
CHRC1250D |
228 |
234.3 |
6.30 |
5.87 |
CHRC1252 |
223 |
240 |
17.00 |
5.44 |
CHRC1254D |
268 |
301 |
33.00 |
4.30 |
Note: Results in italics have been previously reported.
True widths are on average 60% of drilled width.
Click here to go back
Drill Hole CHRC 1245D Summary
Summary
Hole ID |
From |
To |
Length |
Grade g/t |
CHRC1245D* |
437.20 |
474.65 |
37.45 |
18.89 |
including |
437.20 |
442.60 |
5.40 |
9.42 |
and Black Breccia |
442.60 |
455.00 |
12.40 |
32.30 |
and |
455.00 |
474.65 |
19.65 |
13.04 |
*True width is approximately 75% of drilled width
Detail
Hole ID |
From |
To |
Grade g/t |
CHRC1245D |
437.20 |
438.20 |
17.50 |
|
438.20 |
439.00 |
6.94 |
|
439.00 |
440.00 |
4.15 |
|
440.00 |
441.15 |
5.30 |
|
441.15 |
442.00 |
15.15 |
|
442.00 |
442.60 |
7.85 |
Black Breccia |
442.60 |
444.00 |
29.75 |
444.00 |
445.00 |
30.20 |
445.00 |
446.00 |
17.60 |
446.00 |
447.00 |
18.50 |
447.00 |
448.00 |
29.90 |
448.00 |
449.00 |
21.10 |
449.00 |
450.00 |
28.30 |
450.00 |
451.00 |
36.45 |
451.00 |
452.00 |
49.87 |
452.00 |
453.00 |
49.50 |
453.00 |
454.00 |
40.90 |
454.00 |
455.00 |
36.55 |
|
455.00 |
456.00 |
12.90 |
|
456.00 |
457.00 |
8.94 |
|
457.00 |
458.00 |
9.35 |
|
458.00 |
459.00 |
35.40 |
|
459.00 |
460.00 |
8.79 |
|
460.00 |
461.00 |
12.55 |
|
461.00 |
462.00 |
6.37 |
|
462.00 |
463.00 |
27.50 |
|
463.00 |
464.00 |
15.60 |
|
464.00 |
465.00 |
8.15 |
|
465.00 |
466.00 |
6.92 |
|
466.00 |
467.00 |
6.93 |
|
467.00 |
468.00 |
5.36 |
|
468.00 |
468.50 |
4.46 |
|
468.50 |
469.00 |
12.00 |
|
469.00 |
470.00 |
12.55 |
|
470.00 |
471.00 |
17.10 |
|
471.00 |
472.00 |
11.60 |
|
472.00 |
473.00 |
20.55 |
|
473.00 |
474.00 |
16.60 |
|
474.00 |
474.65 |
7.42 |
Click here to go back
Material Intercepts
Pit |
Hole |
From |
To |
Metres |
Au g/t |
Suraw
|
CHRC065 |
63 |
71 |
8.00 |
6.9 |
CHRC1036 |
83 |
90 |
7.00 |
5.00 |
CHRC1038 |
81 |
88 |
7.00 |
7.41 |
CHRC1047 |
116 |
123 |
7.00 |
6.15 |
CHRC1071 |
105 |
112 |
7.00 |
8.87 |
CHRC1074 |
77 |
86 |
9.00 |
7.10 |
CHRC1089 |
134 |
146 |
12.00 |
8.21 |
CHRC1093 |
203 |
211 |
8.00 |
8.97 |
CHRC1094 |
116 |
123 |
7.00 |
6.73 |
Akoti North
|
CHRC554 |
218 |
227 |
9.00 |
3.29 |
CHRC555 |
151 |
169 |
18.00 |
5.02 |
CHRC556 |
159 |
167 |
8.00 |
4.02 |
CHRC557 |
141 |
147 |
6.00 |
3.26 |
plus |
122 |
130 |
8.00 |
4.06 |
CHRC559 |
209 |
222 |
13.00 |
5.95 |
CHRC204 |
136 |
162 |
26.00 |
5.49 |
CHRC824D |
339.25 |
353 |
13.75 |
3.75 |
CHRC1183D |
293 |
313.72 |
20.72 |
2.40 |
CHRC1184D |
287.50 |
312 |
24.50 |
3.83 |
CHRC1185D |
254.20 |
266.70 |
12.50 |
3.09 |
CHRC1187D |
239 |
263.60 |
24.60 |
2.04 |
Akoti Extended
|
CHRC825D |
254 |
261 |
7.00 |
3.80 |
CHRC360 |
98 |
101 |
3.00 |
13.70 |
CHRC597 |
179 |
182 |
3.00 |
5.18 |
CHRC984 |
54 |
68 |
14.00 |
11.08 |
CHRC059 |
144 |
147 |
3.00 |
3.55 |
CHRC208 |
140 |
156 |
16.00 |
8.72 |
CHRC209 |
81 |
99 |
18.00 |
6.59 |
CHRC113 |
92 |
107 |
15.00 |
4.22 |
CHRC600 |
168 |
178 |
10.00 |
4.67 |
CHRC058 |
141 |
145 |
4.00 |
4.24 |
CHRC206 |
95 |
98 |
3.00 |
4.42 |
CHRC980 |
64 |
73 |
9.00 |
3.64 |
CHRC1191 |
140 |
178 |
38.00 |
7.41 |
CHRC1192 |
147 |
177 |
30.00 |
3.00 |
incl |
168 |
174 |
6.00 |
5.73 |
CHRC1194 |
102 |
155 |
53.00 |
6.27 |
incl |
143 |
150 |
7.00 |
9.76 |
CHRC1197D |
266 |
277 |
11.00 |
3.54 |
CHRC1198 |
205 |
227 |
22.00 |
9.30 |
CHRC1206 |
237 |
246 |
9.00 |
3.17 |
Paboase South
|
CHRC139 |
80 |
85 |
5.00 |
4.80 |
CHRC918 |
93 |
99 |
6.00 |
4.14 |
CHRC253 |
136 |
153 |
17.00 |
3.93 |
CHRC920 |
178 |
187.25 |
9.25 |
3.24 |
CHRC254 |
126 |
143 |
17.00 |
4.20 |
CHRC915 |
183 |
198 |
15.00 |
5.70 |
CHRC930D |
174 |
186.85 |
12.85 |
3.04 |
Obra |
CHRC602D |
219 |
347 |
128 |
1.75 |
incl |
313 |
343 |
30 |
4.01 |
CHRC676D 2 |
302.3 |
399.6 |
97.3 |
1.77 |
CHRC848D |
243.2 |
409 |
165.8 |
1.81 |
incl |
303.5 |
343 |
39.5 |
3.86 |
CHRC856D |
258.4 |
354.7 |
96.3 |
2.14 |
incl |
323 |
348 |
25 |
4.36 |
CHRC877D |
130 |
265 |
135 |
2.76 |
incl |
247.9 |
264 |
16.1 |
7.61 |
Tano |
CHRC923 |
151 |
225 |
74 |
5.68 |
incl |
168 |
188 |
20 |
9.99 |
Technical Reports
Click here to go back
Abodoabo Drill Results
Hole |
Northing |
From |
To |
Metres |
Au g/t |
CHRC 714 |
41950 |
9 |
17 |
8 |
0.96 |
26 |
33 |
7 |
2.06 |
41 |
44 |
3 |
1.00 |
51 |
57 |
6 |
2.55 |
CHRC 715 |
42000 |
10 |
20 |
10 |
2.42 |
28 |
33 |
5 |
0.86 |
58 |
61 |
3 |
3.64 |
67 |
70 |
3 |
1.63 |
84 |
87 |
3 |
0.65 |
CHRC 716 |
42050 |
37 |
41 |
4 |
1.09 |
46 |
49 |
3 |
0.61 |
CHRC 717 |
42050 |
29 |
32 |
3 |
3.35 |
CHRC 718 |
42150 |
59 |
62 |
3 |
2.23 |
71 |
76 |
5 |
1.77 |
82 |
85 |
3 |
0.52 |
86 |
91 |
5 |
1.34 |
CHRC719 |
42250 |
14 |
17 |
3 |
0.62 |
CHRC 720 |
42300 |
91 |
109 |
18 |
2.80 |
incl 95 |
98 |
3 |
9.72 |
112 |
115 |
3 |
2.03 |
CHRC721 |
42400 |
53 |
56 |
3 |
0.65 |
77 |
80 |
3 |
1.31 |
CHRC722 |
42500 |
39 |
42 |
3 |
1.09 |
61 |
64 |
3 |
0.75 |
CHRC723 |
42600 |
70 |
73 |
3 |
0.60 |
127 |
150 |
23 |
2.80 |
CHRC724 |
42700 |
61 |
73 |
12 |
1.82 |
76 |
82 |
6 |
1.52 |
Click here to go back
Akwaaba Drill Results
Hole ID |
From |
To |
Metres |
Au g/t |
CHRC733D |
269 |
279.2 |
10.20 |
7.54 |
CHRC733D |
298 |
324 |
26.00 |
13.23 |
CHRC734D |
390.89 |
393 |
2.11 |
18.21 |
CHRC734D |
397 |
420 |
23.00 |
4.07 |
incl. |
400.4 |
405 |
4.60 |
8.72 |
CHRC734D |
420 |
433 |
13.00 |
64.95 |
CHRC734D |
433 |
450 |
17.00 |
2.42 |
CHRC735D |
267 |
270 |
3.00 |
1.00 |
CHRC736D |
231 |
237 |
6.00 |
2.57 |
CHRC737 |
No Significant Intercept |
CHRC738 |
41 |
44 |
3.00 |
1.12 |
CHRC738 |
61 |
65 |
4.00 |
1.67 |
CHRC739 |
37 |
42 |
5.00 |
1.75 |
CHRC740D |
65 |
68 |
3.00 |
13.95 |
CHRC740D |
74 |
79 |
5.00 |
2.32 |
CHRC741D |
270 |
292 |
22.00 |
6.78 |
incl. |
270 |
272 |
2.00 |
30.34 |
CHRC742D |
150 |
154.2 |
4.20 |
2.78 |
CHRC742D |
160 |
164 |
4.00 |
3.58 |
CHRC742D |
174 |
192 |
18.00 |
3.90 |
CHRC743D |
387 |
392.5 |
5.50 |
13.65 |
CHRC743D |
399.6 |
405 |
5.40 |
8.34 |
CHRC743D |
410 |
444.8 |
34.80 |
8.68 |
CHRC744D |
439.86 |
496 |
56.14 |
7.06 |
incl |
457 |
467 |
10.00 |
14.97 |
CHRC745D |
411 |
423 |
12.00 |
6.50 |
CHRC745D |
450.5 |
479.9 |
29.40 |
5.46 |
incl |
465 |
472 |
7.00 |
12.87 |
CHRC746D |
352 |
357 |
5.00 |
3.25 |
CHRC746D |
360 |
383 |
23.00 |
2.15 |
CHRC747D |
527 |
535 |
8.00 |
1.86 |
CHRC747D |
538 |
560 |
22.00 |
2.42 |
CHRC748D |
490 |
500 |
10.0 |
2.74 |
CHRC748D |
508 |
534 |
26.0 |
3.80 |
CHRC749D |
357 |
366.4 |
9.40 |
3.43 |
CHRC749D |
385 |
393 |
8.0 |
3.86 |
CHRC749D |
411.2 |
415.6 |
4.40 |
2.56 |
CHRC749D |
418 |
434 |
16.0 |
5.26 |
CHRC750D |
297.5 |
303 |
5.0 |
2.42 |
CHRC750D |
321 |
326 |
5.0 |
3.36 |
CHRC750D |
342 |
344 |
2.0 |
7.97 |
CHRC750D |
351 |
374 |
23.0 |
1.76 |
CHRC751D |
300.18 |
301.72 |
1.54 |
5.24 |
CHRC751D |
329 |
334 |
5.0 |
1.95 |
CHRC751D |
337 |
386 |
49.0 |
12.89 |
CHRC752D |
225 |
239 |
14.0 |
1.48 |
CHRC753D |
215.33 |
222.6 |
7.27 |
2.41 |
CHRC753D |
226 |
241.18 |
15.18 |
2.27 |
CHRC753D |
252 |
259 |
7.0 |
3.41 |
CHRC753D |
262 |
269 |
7.0 |
3.48 |
CHRC754D |
305.67 |
308 |
2.33 |
5.50 |
CHRC754D |
317 |
328 |
11.0 |
8.36 |
CHRC754D |
331 |
362 |
32.0 |
7.19 |
CHRC772D |
366.5 |
381.4 |
14.9 |
2.02 |
CHRC772D |
384 |
410 |
26.0 |
10.64 |
CHRC773D |
364 |
390 |
26.0 |
12.33 |
CHRC774D |
464.8 |
494.6 |
29.8 |
10.80 |
CHRC775D |
296 |
299 |
3.0 |
5.11 |
CHRC775D |
303.5 |
306 |
2.5 |
7.73 |
CHRC775D |
312 |
340.1 |
28.1 |
8.67 |
CHRC778D |
203.0 |
211.0 |
8.0 |
3.42 |
CHRC778D |
215.32 |
224 |
8.68 |
4.56 |
CHRC778D |
246 |
278 |
32.0 |
6.37 |
CHRC779D |
194.6 |
198 |
3.4 |
3.16 |
CHRC779D |
212.6 |
230 |
17.4 |
6.51 |
CHRC807D |
131 |
145.2 |
14.2 |
2.14 |
CHRC820D |
457 |
462.9 |
5.9 |
1.25 |
CHRC820D |
465 |
516 |
51.0 |
6.88 |
CHRC821D |
471 |
474.1 |
3.0 |
1.24 |
CHRC821D |
478 |
489.2 |
11.2 |
2.40 |
CHRC1123 |
157.0 |
179.0 |
22.0 |
3.79 |
CHRC1126D |
215.0 |
222.0 |
7.0 |
6.99 |
CHRC1134 |
117.0 |
139.0 |
22.0 |
4.49 |
CHRC1124 |
109.0 |
116.0 |
7.0 |
6.77 |
CHRC1125D |
269.0 |
288.0 |
19.0 |
4.56 |
CHRC1127D |
174.0 |
184.0 |
10.0 |
6.73 |
CHRC1128D |
188.2 |
198.7 |
10.6 |
11.74 |
including |
191.0 |
197.0 |
6.0 |
18.17 |
and |
207.0 |
218.0 |
11.0 |
8.00 |
CHRC1131D |
560.7 |
605.0 |
44.3 |
2.79 |
CHRC1145D |
186.0 |
219.9 |
33.9 |
13.64 |
CHRC1146D |
180.0 |
187.0 |
7.0 |
6.61 |
and |
196.0 |
205.4 |
9.4 |
4.13 |
CHRC1151 |
147.0 |
164.0 |
17.0 |
7.94 |
CHRC1153D |
120.0 |
146.0 |
26.0 |
2.16 |
including |
136.0 |
144.0 |
8.0 |
5.00 |
CHRC995D |
471.0 |
497.0 |
26.0 |
14.50 |
CHRC1148D |
196.0 |
210.0 |
14.0 |
6.03 |
and |
218.0 |
230.0 |
12.0 |
6.04 |
CHRC1150D |
168.3 |
198.9 |
30.6 |
3.78 |
including |
190.0 |
196.0 |
6.0 |
10.40 |
CHRC1155 |
101.0 |
142.0 |
41.0 |
3.39 |
including |
117.0 |
142.0 |
25.0 |
4.89 |
CHRC1164 |
149.0 |
161.1 |
12.1 |
1.71 |
CHRC1167D |
95.0 |
108.0 |
13.0 |
3.26 |
including |
102.0 |
105.0 |
3.0 |
6.52 |
CHRC1188 |
98.0 |
102.0 |
4.0 |
5.77 |
and |
95.0 |
103.0 |
8.0 |
3.60 |
CHRC1193 |
205.0 |
218.0 |
13.0 |
2.43 |
CHRC1190 |
150.0 |
158.0 |
8.0 |
4.86 |
CHRC1196 |
178.0 |
191.0 |
13.0 |
6.06 |
CHRC748D |
490 |
500 |
10.0 |
2.74 |
CHRC748D |
508 |
534 |
26.0 |
3.80 |
CHRC749D |
357 |
366.4 |
9.40 |
3.43 |
CHRC749D |
385 |
393 |
8.0 |
3.86 |
CHRC749D |
411.2 |
415.6 |
4.40 |
2.56 |
CHRC749D |
418 |
434 |
16.0 |
5.26 |
CHRC750D |
297.5 |
303 |
5.0 |
2.42 |
CHRC750D |
321 |
326 |
5.0 |
3.36 |
CHRC750D |
342 |
344 |
2.0 |
7.97 |
CHRC750D |
351 |
374 |
23.0 |
1.76 |
CHRC751D |
300.18 |
301.72 |
1.54 |
5.24 |
CHRC751D |
329 |
334 |
5.0 |
1.95 |
CHRC751D |
337 |
386 |
49.0 |
12.89 |
CHRC752D |
225 |
239 |
14.0 |
1.48 |
CHRC753D |
215.33 |
222.6 |
7.27 |
2.41 |
CHRC753D |
226 |
241.18 |
15.18 |
2.27 |
CHRC753D |
252 |
259 |
7.0 |
3.41 |
CHRC753D |
262 |
269 |
7.0 |
3.48 |
CHRC754D |
305.67 |
308 |
2.33 |
5.50 |
CHRC754D |
317 |
328 |
11.0 |
8.36 |
CHRC754D |
331 |
362 |
32.0 |
7.19 |
CHRC772D |
366.5 |
381.4 |
14.9 |
2.02 |
CHRC772D |
384 |
410 |
26.0 |
10.64 |
CHRC773D |
364 |
390 |
26.0 |
12.33 |
CHRC774D |
464.8 |
494.6 |
29.8 |
10.80 |
CHRC775D |
296 |
299 |
3.0 |
5.11 |
CHRC775D |
303.5 |
306 |
2.5 |
7.73 |
CHRC775D |
312 |
340.1 |
28.1 |
8.67 |
CHRC778D |
203.0 |
211.0 |
8.0 |
3.42 |
CHRC778D |
215.32 |
224 |
8.68 |
4.56 |
CHRC778D |
246 |
278 |
32.0 |
6.37 |
CHRC779D |
194.6 |
198 |
3.4 |
3.16 |
CHRC779D |
212.6 |
230 |
17.4 |
6.51 |
CHRC807D |
131 |
145.2 |
14.2 |
2.14 |
CHRC820D |
457 |
462.9 |
5.9 |
1.25 |
CHRC820D |
465 |
516 |
51.0 |
6.88 |
CHRC821D |
471 |
474.1 |
3.0 |
1.24 |
CHRC821D |
478 |
489.2 |
11.2 |
2.40 |
Note: The table above summarizes intercepts based on a minimum of 3m grading 3g/t. True widths are on average 60% of drilled width.
Mineralisation
The gold deposits comprise fractured and altered granite, and include stacked arrays of parallel veinlets, veinlet stockworks, and mineralised cataclasites. The Chirano gold deposits occur within 200 metres to the west of the Chirano Shear. The geometry and shape of the deposits range from tabular (Obra), or pipe-like (Tano), to multiple parallel lodes (Paboase). The mineralised zone thickness ranges from a few metres to over 70 metres. Most deposits dip very steeply towards the west or southwest, and also plunge very steeply. Generally, the tenor of the gold mineralisation correlates with the intensity of alteration, veining and brecciation. The gold mineralisation is associated with 1% to 5% pyrite, and the distribution of gold appears to be closely associated with the presence of pyrite. The hydrothermal alteration assemblage is characterised by ankerite, albite, muscovite and pyrite which overprint earlier hematite dusting of the granite.
Introduction
The Chirano Gold Mine achieved its first gold pour in October, 2005 after commissioning of the process facilities in September, 2005. The current mine plan calls for material to be mined from deposits along an elongated mineralised zone by open pit methods. There are eleven deposits that currently comprise the Chirano project: Akwaaba, Suraw, Akoti South, Akoti North, Akoti Extended, Paboase, Tano, Obra South, Obra, Sariehu and Mamnao.
Gold mineralisation continues at depth, below the current open pit designs at many of the deposits currently included in the mine plan. Drilling at the Akwaaba deposit has established a high grade underground resource which is now being developed as an underground operation. Called the Akwaaba Deeps, first ore is anticipated in the fourth quarter of 2008.
Previous. All pages. Next. Page 1. Page 2 Previous. All pages. Next. Page 1. Page 2 |
|
