Original paper

Selenium-rich secondary minerals from the Baccu Locci mine (Sardinia, Italy)

Campostrini, Italo; Gramaccioli, Carlo M.

Abstract

Together with chalcomenite, orlandiite and another unnamed lead-copper selenite, a number of additional selenium oxysalts, such as francisite, mandarinoite, olsacherite, schmiederite and selenium-rich varieties of beaverite, brochantite, serpierite, spangolite and sulfur have been observed in the old lead-arsenic mine at Baccu Locci, near Villaputzu, Sardinia (Italy). Owing to these new discoveries, in this locality the series of secondary minerals containing important amounts of selenium is remarkable.

Keywords

selenium oxysaltsbaccu loccisardiniapowder diffractionmineral chemistry