Maiden drilling at ++Flynn Gold’s (ASX: FG1)++ Grenadier prospect within its Golden Ridge project in north-east Tasmania has intersected target structures and sulphide-bearing quartz veining beneath high-grade surface trenches.
The campaign comprised seven diamond holes for a total 874 metres to test the down-dip continuity and spatial distribution of high-grade mineralisation identified in surface trenching.
Drilling confirmed shallow high-grade gold below surface, where the mineralised structures are continuous and open along strike and down-dip, with best results of 1.4 metres at 5.2 grams per tonne gold from 26m including 0.42m at 12.7g/t from 26.68m, and 1.9m at 1.2g/t gold from 60.6m.
Sampling and Trenching
Grenadier, which sits on the western margin of the Golden Ridge Granodiorite intrusion, represents a greenfield discovery with no recorded gold occurrences or historical mining activity.
The Grenadier prospect was discovered through soil and rock chip sampling and the excavation of 16 trenches, which exposed three northeast-trending quartz-sulphide veins with gold mineralisation mapped over a 300m strike length and 150m width.
In-situ rock chip sampling of one of the veins exposed in a natural escarpment returned 1m at 11.6g/t gold against previously reported trenching highlights of 1.3m at 6.6g/t gold including 0.4m at 17.7g/t, 2.3m at 4.2g/t gold including 0.4m at 11.0g/t, and 2m at 1.5g/t gold.
Preliminary metallurgical test work on a bulk sample from a vein in Trench 9 returned an average grade of 10.5g/t gold with 95% recovery using a conventional cyanide leaching process.
Larger Intrusive System
Managing director Neil Marston said Flynn believes the quartz-sulphide veining hosted along mafic dyke contacts is part of a larger intrusive system.
“Grenadier remains largely untested with ongoing exploration identifying more gold mineralisation in outcrop at surface,” he said.
“Over the coming months, we will continue with surface sampling and trenching to identify additional targets for future testing.”
