Great Southern Mining Limited (ASX: GSN) has received promising a results from its maiden Diamond Drilling (DD) programme at the Southern Star Gold Deposit at its 100% owned Duketon Gold Project located 45km north of Laverton, Western Australia.
A two hole 319.5m DD program has been completed at Southern Star. The purpose of this drilling was to obtain further insight into the gold mineralisation at Southern Star, which is open to the north, south and at depth.
The two diamond holes were drilled 580m apart at opposite ends of the current known mineralisation, with the intention to examine the structural orientation of quartz veining, folding and foliation at the current extents of mineralisation.
Both diamond holes intersected the target mineralised quartz dolerite unit and significant gold bearing assemblages were noted as part of a potentially larger system.
The standout intersection from the two-hole diamond programme was 20m @ 1.7 g/t Au from 62m incl. 1.6m @ 13.2 g/t Au from 76.6m.
“Today’s results confirm that Southern Star has all the hallmarks of a large mineralised gold system,” Executive Chairman, John Terpu, said.
“The structural analysis of the diamond core has given GSN the first visual insight to what the gold mineralisation looked like in core and what structural and alteration assemblages are key for future targeting.
“The results clearly demonstrate the significance and potential of the deposit given the noted similarities of mineralisation to the much larger million-ounce open pit and underground gold mine at Rosemount and to the Ben Hur Deposit, both along strike on the same regional mineralised structure.
“We remain very excited at the potential of Southern Star and the wider Duketon Gold Project for continued exploration success.”
Diamond hole 21SSDD001 intersected a wide zone of multi-phased quartz veining from 56.6m to 80m. High-grade mineralisation was intersected within this zone of 20m @ 1.7 g/t Au from 62m including 1.6m @ 13.2 g/t Au from 76.6m. The high-grade interval corelates with previous recent Reverse Circulation drilling of 68m @ 1.9 g/t Au from 61m incl 4m @ 15.3 g/t Au from 89m and 5m @ 7.0 g/t Au from 114m in 21SSRC0036.
The second diamond hole (21SSDD002) intersected similar alteration assemblages although notably not as intense, a wide zone of quartz veining was also absent, selective sampling of the second hole from 114m to 131m was undertaken where albite alteration and a quartz veining (118-120m) was intersected.
Although only limited intercepts of significant gold (>0.1 g/t Au) were intersected (0.9m @ 0.16 g/t Au from 117.1m and 0.7m @ 0.11 g/t Au from 120.6m), it is interpreted to be proximal to the mineralised zone due to the similarities in the alteration assemblages. The remainder of the core is currently being cut and multi-element analysis is been undertaken on both diamond holes.
The RC drill rig will immediately return to Southern Star for further drilling to test for strike extensions at Southern Star with a focus on strike extension to the south where no deep drilling has taken place.
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