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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