Augur Resources: Drilling at Wonogiri intersects high grade gold, silver mineralisation

By Ruli Setiawan

ASX-listed Augur Resources Ltd announced on Tuesday further results from regional drilling at its Wonogiri project in Central Java, which have returned high grade gold and silver mineralisation and identified two mineralised prospects in close proximity to the main Randu Kuning Deposit for follow up drilling.

The company provides the following details of the drilling results.

Jangglengan prospect
Located about 1.0 kilometre south of Randu Kuning, previous exploration work in this area by Augur identified an area of exposed clay-pyrite alteration associated with gold-silver enrichment within a hydrothermal breccia host rock. Rock chip samples collected from trenches returned up to 0.32 g/t gold over 16.0 metres, including 8.0 metres of 1.34 g/t gold and 0.11% zinc.

WDDO56, located about 70 metres west of an earlier hole, IWG005, drilled by PT Oxindo Exploration (Oxindo), was drilled towards the east to test an area of hydrothermal breccia with a coincident modelled magnetic high body.

IWG005, located about 50 metres south of the trenching carried out by Augur, was drilled towards the north, intersecting breccia and three distinct zones of gold + sulphide mineralisation associated with quartz-carbonate alteration, including 7.7 metres of 0.32 g/t gold from 42.3 metres, 23.0 metres of 0.5 g/t gold from 103.5 metres (including 1.0 metre of 3.69 g/t gold) and 5.0 metres of 0.71 g/t gold from 144.0 metres (including 2.0 metres of 1.50 g/t gold).

WDD056 returned 7.0 metres at 0.82 g/t gold and 3.5 g/t silver from 56.0 metres including 2.0 metres of 2.08 g/l gold and 10.2 g/t silver from 56.0 metres. A second zone from 70.0 metres returned 7.79 g/t gold, 9.0 g/t silver, 0.29% copper and 0.38% zinc over 3.0 metres, including 1.0 metre at 15.90 g/t gold and 20.7 g/t silver. A third zone was intersected from 120.0 metres and returned 2.64 g/t gold and 1.7 g/t silver over 7.0 metres, including 1.0 metre of 14.8 g/t gold and 4.0 g/t silver from 122.0 metres.

The host rock type for the mineralised zones intersected in both WDD056 and IWG005 is a polymictic, hydrothermal breccia, which is interpreted to be part of a diatreme breccia complex. Mineralisation is manifest as sulphide (pyrite, sphalerite, chalcopyrite) rich stringers and veins and less commonly as matrix infill between breccia clasts.

The sulphides are associated with quartz-carbonate alteration. The presence of gold + sulphide mineralisation within au interpreted diatreme-related breccia is considered notable given that diatreme complexes in Indonesia and elsewhere can host significant gold deposits.

Augur will plan for further follow-up drilling at the Jangglengan prospuct to test the continuity of the gold zones at depth and along strike.

Kepil prospect
Holes WDD058 and WDD059 were drilled at the Kepil prospect which is located approximately 500 metres southwest of Randu Kuning.

WDD058 jntersected significant copper mineralisation including 36.0 metres at 0.28% copper from 25.0 metres.

WDD059 was drilled to test an area of clay-pyrite alteratibn and local mining activity.

This hole intersected a shallow 6.0 metre wide zone of 0.83 g/t gold from 36.0 metres. In addition, several other lower grade (0.20 to 0.30 g/t gold) intercepts were also noted. Mineralisation occurs within a structurally controlled, quartz-carbonate and sulphide (pyrite, sphalerite) zone within intensely argillic altered diorite.

With significant mineralisation intersected in the first two holes at Kepil, additional drilling of targeted extensions of mineralised zones is planned.

Other target areas
Six further holes have been completed to test several areas of structurally controlled, quartz vein/alteration zones typical of low-sulphidation, epithermal type mineralisation. With the exception of several narrow (1.0 to 3.0 metres), low grade gold intercepts (<0.5 g/t gold) no significant gold mineralisation was intersected. However given that such veins systems can vary in width and grade dramatically along strike, further assessment of the results is ongoing. Additional drilling will be completed as warranted.

Wonogiri project
The Wonogiri project is located approximately .30 kilometres to the south of the provincial city of Solo in central Java and is easily accessible by daily flights from the capital Jakarta and a short one hour drive by car on a sealed road.

A total of 18, 026 metres of drilling in 60 diamond drill holes have been completed at the Wonogiri project. Forty four of these (12,462 metres) have been drilled at the Randu Kuning prospect area. Average drill depths were 318.0 metres with hole depth ranging from 157.6 to 855.0 metres. This work has defined a JORC compliant mineral resource of 1.54 million ounces of gold at a 0.2 g/t gold equivalent (?AuEq?) cut-off (90.9 million tonnes at 0.53g/t. Au Eq).

Editing by Reiner Simanjuntak