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Ferberite: Fe++WO4
Comments: Ferberite with minor siderite selvage. Location: Panasqueira (2nd level), in the region of Beira Baixa, Portugal. Scale: 6 x 5 cm. © Fabre Minerals
Ferberite: Fe++WO4 Anthoinite: AlWO3(OH)3 Cerotungstite-(Ce): (Ce,REE)W2O6(OH)3
Comments: Yellow cerotungstite-(Ce), with black ferberite veins and whitish anthoinite. Location: Bugarama, Rwanda. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species