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Conference Proceedings

PACRIM 2019

Conference Proceedings

PACRIM 2019

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Distribution of gold within the Dargues Reef alteration system

The Dargues Reef gold deposit is hosted within the Early Devonian, Braidwood Granodiorite, 60 km southeast of Canberra, 13 km south of the town of Braidwood and 2 km north of the village of Majors Creek (location shown in figure 1). The Resource and Reserves are 1.615Mt @ 6.3g/t Au (327,300 oz. of gold). The deposit is undeveloped however decline access is currently being constructed. The geology and dating of the deposit is well-described in Forster and Downes, 2014.Gold mineralisation within the Dargues deposit is unusual. The geometry of the gold-bearing lodes is similar to that expected in a structurally- hosted gold deposit, however the gold occurs within disseminated clots of pyrite at the centre of structurally-controlled alteration zones. The density of disseminated pyrite broadly determines the grade of the gold mineralisation. Even at the centre of the lodes, the granitic texture of the host rock is retained and it is not possible to identify a particular structure that hosts the gold. CITATION: Lorrigan, A and Vukovic, D, 2019. Distribution of gold within the Dargues Reef alteration system, in Proceedings PACRIM 2019, pp 233236 (The Australasian Institute of Mining and Metallurgy: Melbourne).
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  • Published: 2019
  • PDF Size: 0.539 Mb.
  • Unique ID: P201901068

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