Daubréeite is a rare bismuth oxohalide mineral with formula BiO(OH,Cl).
[2] 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.
[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.