Gibb River Diamonds Limited (ASX:GIB) has obtained strong results from the Phase 8 Aircore (AC) drilling programme at the Edjudina Gold Project in the heart of the Eastern Goldfields of Western Australia.
A total of 42 holes were drilled for 1,485 m were drilled, with 540 samples assayed as either one metre cyclone splits (172 samples), one metre spear samples (162 samples) or composite samples (206 samples), mainly 6.0 metre composites.
Ace of Hearts Prospect
Phase 8 Aircore drilling at the Ace of Hearts Prospect has discovered a new mineralised structure which includes a drill intersection from GAC480 of 7m at 2.53g/t Au from 9.0 m.
This new Ace of Hearts target has considerable potential as it is open for 900 m to the north and south. Hole GAC 481 is situated 20 m south-east of GAC480 and targeted the same structure. GAC481 returned 7m @ 0.57g/t from 6.0m and although the tenor of mineralisation is lower than in GAC480, the result is very favourable as the two holes do correlate and indicate a mineralised structure with considerable strike potential.
GAC480 and 481 were drilled on a minor topographic high with ~1.5m thick outcropping boudinaged quartz veins with surrounding argillic/limonitic alteration of the host phyllites. The structure hosted artisanal gold workings.
These are highly encouraging results which open up further extension targets along strike and down-dip. This area is previously undrilled and has considerable potential. The area is now a target for future follow-up drilling.
Neta Prospect – Phase 8 AC Drilling Results
Phase 8 drilling at the Neta prospect concentrated on under-explored ground immediately east of the Neta Lodes discoveries, in an area with highly anomalous historic soil geochemistry.
Drilling showed an approximately 2.5m deep strongly mineralised supergene calcrete horizon immediately below the surface, with grades of up to 3.2g/t Au.
Lode-style mineralisation was also encountered in the westernmost holes, which fall inside the broader Neta Prospect envelope. This lode mineralisation consists of quartz veining and/or hematite/limonite alteration of phyllite and extends over a strike length of approximately 100m and is open to the southeast, potentially extending into M31/481 (not GIB ground).
Follow-up drilling will be required to better define this lode mineralisation.
The company drilled five AC holes immediately north of the historic Gawler shaft to test northward extensions to GIB’s Gawler lodes discoveries5&7. Drillhole GAC486 returned 4.0m @ 2.44g/t from 38m, with mineralisation extending to the end of hole. This mineralisation is associated with quartz veining. The mineralisation borders M31/481 (not GIB ground) to the north.
Drillholes GAC488 to 490 indicated that mineralisation has been stoped out by porphyry and diorite intrusions. The Gawler Prospect was a significant mining operation in the early 1900’s including a 122m deep shaft. GIB believes this structure which was mined still has considerable potential, however, it needs to be targeted in areas which the porphyry/diorite stoping has missed. This will be the aim of a future drill programme
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