Robust intersects further high-grade polymetallic mineralization at Perak Basin
Thursday, July 10 2014 - 02:54 AM WIB
ASX-listed Robust Resources Limited announced Thursday the completion of a further four holes from recent exploration drilling of the Perak Basin on its Romang Island project in Maluku Province.
One of the highlights of the drilling program to date is drill-hole LWD 433, located in the center of the Perak Basin, the company said in a statement. This hole intersected high-grade precious and base metal sulphides?further extending and enhancing the mineralized domain discovered last month:
? 19.45m at 7.39 g/t AuEq and 7.41 % combined base metals from 90.55 m
(1.53 g/t Au, 311 g/t Ag, 0.30% Cu, 3.68% Pb, 3.43% Zn) including:
? 6.45m at 9.92 g/t AuEq and 6.14% combined base metals from 90.55m
(1.07 g/t Au, 469 g/t Ag, 0.27% Cu, 3.77% Pb, 2.11% Zn) and including:
? 2.0m at 10.33 g/t AuEq and 9.53% combined base metals from 99.0m
(1.35 g/t Au, 476 g/t Ag, 0.29% Cu, 5.52% Pb, 3.73% Zn) and including:
? 6.0m at 8.24 g/t AuEq and 12.92% combined base metals from 103m
(2.82 g/t Au, 287 g/t Ag, 0.45% Cu, 5.46% Pb, 7.02% Zn).
?The intersection from LWD 433 is one of the richest obtained during more than 5? years and approx. 50,000 meters of diamond core drilling. The exceptional quality of LWD 433 is demonstrated by the fact that it is one of six intersections exceeding 10 metres thickness and 6 g/t AuEq at the project,? the statement said.
The five other exceptional quality intersections have been recorded across the Batu Mas prospect and the Perak Basin respectively, including:
? LWD 051: 60m @ 6.7 g/t AuEq-Batu Mas
? LWD 072: 25m @ 6.88 g/t AuEq-Batu Mas
? LWD 110: 17m @ 9.07 g/t AuEq-Batu Mas
? LWD 370: 22m @ 6.28 g/t AuEq + 5.79% BM-Perak Basin
? LWD 429: 12.8m @ 7.00 g/t AuEq + 8.86% BM-Perak Basin
?LWD 435 revealed two thick intersections of breccia mineralization consisting of an upper zone 53 meters in length and a deeper zone 36 meters in length. The upper zone is likely to be more economically significant as, in common with most holes in the Perak Basin, there is an upper high-grade BEX zone. In this case the BEX is dominated by high silver values,? Robust said.
The upper intersection in LWD 435 includes:
? 7.2m at 3.36 g/t AuEq and 0.91% combined base metals from 44.8m (BEX)
(0.36 g/t Au, 161 g/t Ag, 0.04% Cu, 0.45% Pb, 0.42% Zn) within a broader zone
? 53m at 1.43 g/t AuEq and 0.75% combined base metals from 43m (BEX + breccia) (0.39 g/t Au, 55 g/t Ag, 0.04% Cu, 0.43% Pb, 0.28% Zn)
Robust?s Managing Director Gary Lewis commented: ?We are very pleased with the exceptional quality of the latest assays we have received from drilling at the Perak Basin. Of particular significance from the latest round of drilling is hole LWD 433 which is a further extension of the high grade precious and base metal domain reported in June.?
Editing by Reiner Simanjuntak