Perth, Dec 5, 2008 AEST (ABN Newswire) - Phase two of a resource definition and extension diamond drilling programme at Anglo Australian Resources (ASX:AAR)(PINK:AAURF) wholly owned Koongie Project, located 25kms east of Halls Creek, has now finished. Twelve diamond drill holes totalling 2624.2m were completed. Drill cores from all holes have been cut and submitted for assay. Some assay results were released in the Company’s September Quarterly report and results for some additional holes are presented in this release. Assay results are awaited for six holes. The locations of the Sandiego drill holes are shown in the drilling plan.
HIGHLIGHTS
- Hole SRCD031 at Sandiego intersects 68m @ 6.8%Cu, 9.6%Zn, 98.7g/t Ag, 0.34g/t Au
- Hole SRCD029A at Sandiego intersects 29m @ 7.89% Zn, 46g/t Ag, 5m @ 3.95%Zn and 4m @ 0.63%Cu, 26.83g/t Au
- Massive sulphides intersected in two holes at Onedin
Sandiego Hole SRCD031 --- 68m @ 6.8%Cu, 9.6% Zn, 98.7g/tAg, 0.34g/t Au
SRCD031 intersected a zone of substantial high-grade copper and zinc mineralisation consisting of chalcocite at shallower levels and sphalerite and chalcopyrite at deeper levels.
The zone, intersected over 68m from 100m downhole, is estimated to have a true width of 34m. It consists of a central high grade zinc-rich portion (111-152m) flanked by high grade copper-rich portions (100-125m, 148-168m):
- 100 - 125m 25m @ 11.36% Cu, 2.12% Pb, 13.3% Zn, 142g/t Ag
- 111 - 152m 42m @ 2.49% Cu, 2.26% Pb, 14.92% Zn, 127g/t Ag, 0.18g/tAu
- 148 - 168m 20m @ 8.84% Cu, 2.17% Zn, 28g/t Ag, 0.92g/t Au
The intersected mineralization occurs within the Transition Zone at a vertical depth of 70- 120m. The copper-rich upper part of the overall mineralised zone is interpreted to be a zone of supergene enrichment. The intersection in Hole SRCD031 is much longer and of significantly higher grade compared to other intersections previously obtained at the Sandiego deposit. It is the best ever drilled at Sandiego, particularly when the high grade of the copper mineralization is considered. Preliminary interpretations suggest that Hole SRCD031 is the first hole to completely intersect the zone of supergene copper enrichment.
The Pre-Feasibility Study recently completed by the Company for the development of the Sandiego deposit did not envisage mining of any copper mineralization in the Transition Zone. The discovery of such high grade copper mineralization in SRCD031 has the potential to very positively impact the development economics of the Sandiego deposit, particularly as the mineralization occurs at a relatively shallow depth. The full extent of the high grade copper zone is, however, yet to be fully defined.
Sandiego Hole SRCD029A --- 29m @ 7.89% Zn, 46g/t Ag, 5m @ 3.95% Zn and 4m @ 0.63% Cu and 26.83g/t Au
Hole SRCD029A, which was drilled primarily to obtain material for metallurgical testing from the main Sandiego zinc-rich deposit, intersected massive and disseminated zinc mineralisation over 29m from 165m downhole. The mineralised zone is estimated to have a true width of approximately 14.5m. This hole also returned a high grade gold intersection (4m @ 26.83 g/t Au) from a ferruginous fault zone. Low-grade gold is present throughout the Sandiego deposit and occasionally high- grade values do occur, particularly in the Oxide and Transition Zones of the deposit. The intersection in SRCD029A is of particular interest as it occurs outside of, and marginal to, the Sandiego deposit in a fault structure.
A summary of intersections at 1% Cu and 3% Zn cut offs is presented below:
119 - 123m 4m @ 0.63% Cu, 26.83g/t Au
165 - 194m 29m @ 0.17% Cu, 1.1% Pb, 7.89% Zn, 46g/t Ag
200 - 205m 5m @ 0.18% Cu, 3.95% Zn, 9.8g/t Ag, 0.16g/t Au
216 - 218m 2m @ 5.75% Zn
242 - 245m 3m @ 4.7% Zn, 8g/t Ag
Massive sulphide intersections in two drill holes at the Onedin deposit
Two holes completed at the Onedin deposit provided valuable geological information that is expected to lead to a revision of the current resource model in due course. Preliminary interpretations indicate potential to increase the primary sulphide resource.
Hole ORCD051 intersected six zones of massive sulphide (dominated by 10-20% sphalerite) between 194 and 323m in ORCD051. Estimated true widths of the zones varied from 3 to 17m. Assays are awaited.
Hole ORCD50 returned several wide mineralised intersections entirely from the Transition Zone. Assay details are awaited
Overview
Once all assays are received for all holes both the Sandiego and Onedin deposits will be remodelled and new resources estimated. Resource estimates for the primary and transitional mineralization at Sandiego are expected to increase on the basis of drill results so far received.
About Astral Resources NL
Astral Resources NL (ASX:AAR) is a Perth based gold exploration & base metals company listed on the Australian Securities Exchange.
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