Augur intersects further gold-copper mineralization at C. Java project
Monday, July 4 2011 - 02:31 AM WIB
Hole WDD008 was drilled to test the down dip extension of the gold and copper mineralisation intersected in holes WDD006 (37.5 metres at 0.65 g/t gold and 0.13% copper from surface and a further 48.0 metres at 1.45 g/t gold and 0.2 6% copper from 49.5 metres), WDD004 (37.5 metres at 1.21 g/t gold and 0.44% copper from 5.5 metres depth) and WDD002 (47.0 metres at 1.28 g/t gold and 0.26% copper from surface). WDD008 is approximately 60 metres west of hole WDD006.
WDD008 returned a very broad intersection of gold ?/- copper mineralisation of 218.5 metres at 0.97 g/t gold and 0.2 0% from 40.0 metres depth (cut-off of 0.18 g/t gold or 0.3% copper with a maximum 2.0 metres of continuous internal dilution). Two main zones of gold and copper mineralisation exist within the intersection and are separated by only 4.0 metres of weakly mineralised material.
A 90.0 metre zone between 59.5 metres and 149.5 metres returned 0.93 g/t gold and 0.22% copper. A further 84.0 metre zone between 153.5 metres and 237.5 metres returned 1.29 g/t gold and 0.26% copper. The 90.0 metre zone exists largely within quartz stock working and breccias, while the 84.0 metre interval occurs within sheeted quartz veins within microdiorite.
In hole WDD008, the zone of sheeted veining has increased substantially from that identified in the shallower holes (WDD006 and WDD004 in particular). This is significant as it indicates the zone of anomalous gold +/- copper may be increasing in width with depth.
Mineralisation remains open to the north, south, west and at depth. A further hole, west of WDD008, is being planned to test the western boundary of the mineralised zone and down dip of WDD008.
Data from local geology and recent drilling indicates that the mineralisation at Randu Kuning is related to a near vertical gold-copper porphyry within a large eroded volcanic centre, possibly related to a northward migrating Oligocene to Miocene volcanic Arc.
Mineralisation within the porphyry at Randu Kuning is contained within extensive stock working and sheeted veins hosted within a micro-diorite and as disseminated copper +/- gold within the microdiorite body itself. (romel)