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Willemseite: (Ni,Mg)3Si4O10(OH)2 Trevorite: NiFe+++2O4
Comments: Small trevorite crystal in massive willemseite. Location: Bon Accord, Barberton Mountain, Mpumalanga, South Africa. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Waxy translucent green willemseite with black trevorite in schistose rock. Location: Near Scotia Talc Mine, Barberton Mountain, Transvaal, Mpumalanga, South Africa. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species