Bahianite is a rare aluminum antimony oxide hydroxide. It forms monoclinic, transparent to translucent, tan, cream or orange-brown, adamantine, prismatic crystals. Bahianite was discovered by Carlos Barbosa, and has only been found in stream-worn pebbles within potholes and as residual concentrates above weathered volcanic rock, Pebbles are associated with quartz, andalusite, kyanite, diaspore, eskolaite, and cassiterite. Bahianite was named in 1978 for the type locality: Pico das Almas river, Paramirim das Crioulas, Erico Cardoso, Bahia, Brazil. Other notable localities include: Serra da Mangabeira, Paramirim, Bahia, Brazil.
You can buy these clear tan crystals online from The Arkenstone, www.iRocks.com to add fine mineral specimens to your collection.