Klondyke East
Overview
Jupiter considers the property prospective for gold and diamonds. The tenement covers an Archaean greenstone sequence 11km long by up to 1.5km wide situated 5km south-east along strike from the Klondyke mine workings. The Brockman Kimberlite dyke occurs in northern sector of the tenement cutting a cross the regional trend.
Location
The Klondyke East property is situated in the Pilbara Mineral Field of Western Australia and centred approximately 50km south-east of Marble Bar, 35km north-west of Nullagine.
History
Preliminary soil and stream sediment geochemistry has shown the Klondyke East property to be geochemically anomalous in gold. So far, values are linked to shear zones exhibiting strong potassic alteration traceable over several kilometres.
Previous explorers have delineated kimberlite dykes. The most significant of these, dyke BC01, strikes through the property over a distance of some 4.5 kilometres for a thickness ranging from less than 0.5m to up to 6m. BC01 demonstrated the existence of macro diamonds but diamond grades were low. BC01 is part of the Brockman dyke swarm which historically demonstrates low diamond tenor.
Geology
Archaean greenstone sequence trends north-westerly through the central sector of the tenement bounded respectively to the southwest and northeast by the Corunna Downs and Mt Edgar Batholiths.
The greenstone sequence comprises part of a layered succession of mafic, ultramafic and felsic volcanic and intrusive rocks of the Salgash Supersequence which include thin chert units. Four deformational events are recognised.
It is theorised late stage extensional faulting and related igneous activity is represented by early Proterozoic dolerite dyke swarms that trend northeast through the area. The Brockman Creek kimberlite dyke swarm which trends east northeast is possibly associated with this extensional faulting. This dyke swarm passes through the tenement over 4.5km and has been traced off property to the southwest and northeast for several kilometres.
Exploration
A total of 75 rock chip samples numbered Ke 1 to 75 were collected and assayed by Ultra Trace for gold, silver, platinum, palladium, copper, arsenic, and lead. A number of anomalies were returned that were of interest. The highest gold value was for Ke 68 at 28.6 g/t gold (AMG 190537 7629527 ZONE 51). This came from a small quartz vein located in an area where intensive metal detecting had been undertaken. Sample Ke 35 gave a value of 0.43 g/t gold (AMG 807464 7633025 ZONE 50).
Sample Ke 35 came from quartz veining with associated fuchsite and gossan stringers, very similar in appearance to the rocks that host gold resources at Klondyke Queen. In the field, similar rock units were located and were generally anomalous in arsenic.
Outlook
The work program already completed by Jupiter has confirmed the presence of the fuchsitic quartz veining that hosts much of the gold resource at Klondyke 7km along strike to the northwest. These vein systems represent future exploration targets.
Jupiter will be examining the structural relationships in project area in an effort to define the structural controls of Brockman dyke swarm and gold mineralisation. A better understanding of the structural controls should lead to new gold and diamond mineralisation targets being established in this reporting period.