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Daubréeite

Rare bismuth oxohalide mineral From Wikipedia, the free encyclopedia

Daubréeite
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Daubréeite is a rare bismuth oxohalide mineral with formula BiO(OH,Cl). It is a creamy-white to yellow-brown, soft, earthy clay–like mineral which crystallizes in the tetragonal crystal system. It is a member of the matlockite group.[2]

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It was first described for an occurrence in the Constanicia mine, Tazna, Bolivia, in 1876.[5] It was named for French mineralogist Gabriel Auguste Daubrée (1814–1896).[2] At the Tanza location it occurs as a secondary mineral formed by the oxidation of native bismuth or bismuthinite. It occurs with clay minerals.[4] In addition to its discovery location it has also been reported from the Tintic District in the East Tintic Mountains of Juab County, Utah; in the Josephine Creek District of Josephine County, Oregon; in the Manhattan District of Nye County, Nevada; and the Rio Marina Mine on Elba, Italy.[2]

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