EL 8926 Rockley

Porphyry-related (Cu-Au)

The Rockley Project lies within the highly copper-gold endowed Ordovician Macquarie Arc coincident with the LTZ. The Macquarie Arc hosts numerous major porphyry-related copper-gold deposits including the world-class Cadia-Ridgeway, Northparkes porphyry Cu-Au and Cowal epithermal Au deposits. Legacy Minerals has identified several new exploration targets which exhibit porphyry-related Cu-Au mineralisation and shear hosted Cu-Au manifestations in Ordovician Rockley-Gulgong Volcanic rocks. Less than 10km to the south east the Rockley-Gulgong Volcanics host the nearby 437 ± 8Ma Racecourse porphyry-related Cu deposit  (Inferred Resource of 71Mt at 0.44% Cu and 0.064g/t Au (using a 0.3%)  JORC (2012)). The age date for the Racecourse porphyritic monzonite aligns well with the dates reported for the Cadia Far East intrusion of 440.1 ± 4.2 to 437± 3.0Ma.

A recent assessment of Rockley-Gulgong Volcanics by the Geological Survey of New South Wales (GSNSW) found that the ground within EL8926 is some of the most prospective for porphyry-related copper-gold deposits in the Rockley-Gulgong Volcanics. In contrast to the intense exploration drilling completed within other parts of the Macquarie Arc, the Rockley Project has had very little porphyry focused systematic exploration. Prominent companies exploring within the Rockley – Gulgong Volcanics include Freeport McMoran, Alkane, Anglo American, Godolphin Resources, New South Resources, Sultan Resources and Gold and Copper Resources.


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