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An extensive, but irregular, corridor of granitic gneiss and migmatites, with associated small layered mafic intrusions, continues SE from the latter to the southern edge of the Yilgarn Craton.These metamorphic domains appear to be related to broad zones of shallow, west-vergent, thrusting (Wilde et al., 1996).Newmont acquired Normandy Mining Limited in 2002, then the Newcrest share of the joint venture in 2006.Anglo Gold had merged with Acacia Resources in late 1999, and sold its Boddington interest to Newmont in 2009, who then became the sole owner of the operation.It also falls within the southern section of the Darling Plateau bauxite province that includes a cluster of large bauxite deposits, several of which overlie the Saddleback greenstone belt.Gold mineralisation has been exploited at Boddington in two major phases.The Morangup and Saddleback greenstone belts are younger, composed of basaltic, intermediate and lesser felsic volcanic rocks, ultramafic dykes and granitoids emplaced between 27 Ma.

The Boddington gold-copper deposit is one of the largest gold producers in Australia.Regional Setting The Boddington Au-Cu mine and Saddleback greenstone belt are located within the Archean South West terrane, which covers an area of ~100 000 km, and was amalgamated with the adjacent Youanmi terrane at ~2.65 Ga (Cassidy et al., 2006).It is characterised by a paucity of preserved greenstone belts compared to adjacent terranes of the Yilgarn craton, and those that are known, are comparatively small.The first was between 19, mainly from the bauxitic laterite and saprolitic profile, complemented by underground high grade, hard rock, lode ore from the Jarrah quartz veins.The second phase of mining commenced in 2009 and continues to the present, exploiting the large, hard-rock Wandoo deposit within the underlying greenstone basement.

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