Tambang
Gold, silver and base metal mineralization at Tambang occurs within a complex vein swarm, hosted in a narrow shale unit which separates a footwall massive chlorite-epidote-magnetite altered basic andesitic unit from a hanging wall sequence of variously chlorite-clay altered andesitic tuffs. Individual veins range from a few millimetres to around 0.5m, and are typically banded, with irregular contacts and open space centres, and comprise varying proportions of quartz, calcium and manganese carbonates displaying textures typical of these style of deposits. Associated mineralization includes pyrite, sphalerite, galena, minor chalcopyrite, argentite and minor free gold as electrum. Outcrop is very patchy the area with strong weathering extending down to around 30m.
Two historical resource estimates exist for Tambang (summarized in Table 5A10) and these do not incorporate Finders 2006 drilling nor does it assess the quanitity of zinc in the deposit. A previous press release by Antares (28 November, 1997) suggests that the gold equivalent is calculated using a 57:1 conversion. (i.e. 57 g/t Ag = 1 g/t Au).
|
Category |
Cut-off |
Tonnes |
Au (g/t) |
Ag (g/t) |
No. holes |
|
|
g/t Au equiv |
|
|
|
|
Antares (1998) |
None |
1 g/t |
9,876,192 |
0.61 |
109 |
53 |
|
None |
2 g/t |
4,067,462 |
0.73 |
192 |
53 |
H & S (2006) |
Inferred |
1 g/t |
7,900,000 |
0.67 |
167 |
20 |
Summary of Tambang mineral resource estimates pre-2006
The Antares estimates were reported in 1998 and, therefore, do not conform to the later NI43-101 Rules or Guidelines. There is no classification into Measured, Indicated and Inferred Mineral Resources and no Competent Person or Qualified Person is cited as having been responsible for the estimates. The results are included here purely as a historical record.

Tambang Drilling Plan Map
H&S, in January 2006, independently reviewed the estimate. At Tambang, the continuity of mineralisation between sections can only reliably established over a distance 500m south from line 9480300N. The H&S estimates of the Tambang Inferred Mineral Resource are based on a simple cross sectional area method using composite drill intercepts from 20 drill holes and an approximate 1 g/t Au equivalent cut-off (70 g/t Ag = 1 g/t Au) and an assumed density of 2.6. The results are comparable to the “preliminary estimate” of Antares. As with the Jambi estimates, the results of the original assayed intervals were unavailable to Finders. H&S’s estimates was, therefore, based on Antares’ averaged assays over long intervals.

Cross Section (9480525 N), Tambang
In 2006, Finders drilled 8 new diamond drill holes at Tambang, for a total of 1600m. 6 of these holes were drilled along line 9480525n , of which 4 TBG1-4 were twins of former Antares holes, with the aim of confirming the previously reported drilling results, gaining an understanding of the geology and ore controls, and testing for deeper extensions of the system.. Two additional holes, TBG 6 and 7 were drilled to the north of the Tambang resource zone, to check a previously reported intersection of 2m at 311 g/t Au reported from a previous Antares scout hole.
The 4 sets of twin holes confirmed both the widths, and grades reported from the previous Antares drilling, as shown below.
| HOLE |
From (m) |
TO (m) |
WIDTH (m) |
Au g/t |
Ag g/t |
Au Equiv |
Au Equiv * Width |
| TBG01 |
117 |
130 |
13 |
0.31 |
122 |
2.35 |
30.55 |
| |
133 |
135 |
2 |
0.32 |
133 |
2.54 |
5.08 |
| |
140 |
147 |
7 |
0.19 |
54 |
1.05 |
7.35 |
| |
151 |
156 |
5 |
0.52 |
191 |
3.70 |
18.50 |
| |
159 |
161 |
2 |
1.41 |
110 |
3.25 |
6.50 |
| |
166 |
167 |
1 |
0.57 |
46 |
1.34 |
1.34 |
| |
Total |
|
30 |
|
|
2.31 |
69.32 |
| RTH042 |
Comparison |
|
31 |
|
|
2.52 |
78.12 |
| TBG02 |
159 |
160 |
1 |
1.20 |
12 |
1.40 |
1.40 |
| |
165 |
174 |
9 |
0.43 |
231 |
2.82 |
25.38 |
| |
178 |
180 |
2 |
0.37 |
65 |
1.45 |
2.90 |
| |
189 |
190 |
1 |
0.31 |
68 |
1.45 |
1.45 |
| |
194 |
195 |
1 |
0.15 |
64 |
1.22 |
1.22 |
| |
Total |
|
14 |
|
|
2.31 |
32.35 |
| RTH046 |
Comparison |
|
11 |
|
|
4.01 |
44.12 |
| TBG03 |
31.9 |
44 |
12.1 |
1.20 |
351 |
7.01 |
84.82 |
| |
75 |
77 |
2 |
0.09 |
67 |
1.20 |
2.40 |
| |
80.7 |
81.9 |
1.2 |
0.22 |
111 |
2.08 |
2.50 |
| |
Total |
|
15.3 |
|
|
5.86 |
89.72 |
| RTH003 |
Comparison |
|
9 |
|
|
5.94 |
53.46 |
| TBG04 |
82 |
86 |
4 |
0.37 |
188 |
3.50 |
14.00 |
| |
88 |
93 |
5 |
0.17 |
64 |
1.24 |
6.20 |
| |
103 |
106 |
3 |
1.31 |
154 |
3.69 |
11.07 |
| |
126 |
129 |
3 |
0.15 |
118 |
2.11 |
6.33 |
| |
Total |
|
15 |
|
|
2.51 |
37.60 |
| RTH004 |
Comparison |
|
6 |
|
|
2.67 |
15.98 |
+ Au equivalents are calculated using Ag g/t * 60 plus Au g/t
Table 5A11: Twin Hole Drill Results
Holes TBG5 and TBG8 were drilled to test for down-dip extensions approximately 50 and 150m below the previous drilling. TBG5 intersected similar grade and width of mineralisation in the same stratigraphic setting, but in TBG8 the host shale horizon appears to be faulted out, and no significant assays were returned.
These holes also showed a previously unreported zinc and lead values in addition to the precious metals, and also demonstrated that the Tambang vein zone occurs within a thin black shale unit, which appears to separate basement altered basaltic rocks from a younger andesitic volcaniclastic sequence.
Hole |
From (m) |
Width (m) |
Ag g/t |
Au g/t |
Pb % |
Zn % |
TBG01 |
116.00 |
10 |
135 |
0.32 |
1.0 |
2.1 |
TBG01 |
140.00 |
21 |
86 |
0.41 |
0.6 |
1.1 |
TBG02 |
165.00 |
20 |
125 |
0.32 |
0.8 |
1.8 |
TBG03 |
31.90 |
14 |
320 |
1.10 |
0.7 |
0.2 |
TBG04 |
82.00 |
24 |
77 |
0.30 |
0.2 |
0.7 |
TBG04 |
126.00 |
3 |
118 |
0.15 |
0.5 |
0.9 |
TBG05 |
199.00 |
29 |
110 |
0.33 |
0.5 |
1.6 |
Summary of Significant Tambang Drill intercepts by Finders in 2006
TBG 6 and 7 were drilled to test a high grade intercept of 2m at 311 g/t Au reported from 103m depth in hole RTH21 . TBG7 intersected a 2 m zone of total core loss the target depth (104.7-106.7m), and TBG 6 intersected a similar zone of poor recovery between 122 and 126.2m, interpreted by Finders to represent a clay rich fault zone in the basement basic volcanic sequence. The apparent equivalent of the main Tambang vein system was intersected in both holes at shallower depths, from 42.8-52.9m in TBG6, and 22-46m in TBG7, in both cases as moderately to strongly oxidized, highly fractured core with poor core recovery and only low assay values .
The Tambang vein system has been traced by mapping for over two kilometres and, outside of the defined resource has only been drill tested by shallow drilling on approximately 100m spaced sections. The known mineralization at Tambang shows a strong resistivity and chargeability response to IP geophysical surveys, and the IP data shows several strong anomalies branching out from the known target. These are interpreted as prime targets for discovery of additional mineralization at Tambang.
Finders forward programme at Tambang comprises detailed metallurgical test-work to understand the recoverable value of the gold - silver - zinc - lead mineralization encountered in the Tambang vein system prior to a systematic drill out of the resource base, which remains open to the north, south and at depth.
