Brewsterite: Properties and Occurrences

Brewsterite: Properties and Occurrences

Brewsterite is the name of a series of tectosilicate minerals of the zeolite group. Prior to 1997, brewsterite was recognized as a mineral species, but…
Breithauptite

Breithauptite

Breithauptite is a nickel antimonide mineral with the simple formula NiSb. It is a copper-colored usually arborescent mineral NiSb consisting of nickel antimonide It was…
Brazilianite: Properties and Occurrences

Brazilianite: Properties and Occurrences

Brazilianite, whose name derives from its country of origin, Brazil, is a typically yellow-green phosphate mineral, most commonly found in phosphate-rich pegmatites. It is an…
Braunite: Properties and Ocurrences

Braunite: Properties and Ocurrences

Braunite is a silicate mineral containing both di- and tri-valent manganese with the chemical formula: Mn2+Mn3+6[O8|SiO4]. It was named after Wilhelm von Braun, an Advisor…
Brassite

Brassite

Brassite is a rare arsenate mineral with the chemical formula Mg(AsO3OH)·4(H2O). It is a rare arsenate mineral, first discovered in 1973 in Jachymov (Joachimsthal), Czech…
Braggite: Properties and Occurrences

Braggite: Properties and Occurrences

Braggite is a sulfide mineral of platinum, palladium, and nickel with chemical formula: (Pt, Pd, Ni)S. It is a dense (specific gravity of 10), steel…
Bowieite: Properties and Occurrences

Bowieite: Properties and Occurrences

Bowieite is a rhodium-iridium-platinum sulfide mineral (Rh, Ir, Pt)2S3, found in platinum-alloy nuggets from Goodnews Bay, Alaska. It was named (by the IMA in 1984)…
Boussingaultite

Boussingaultite

Boussingaultite is a rare sulfate mineral of the chemical formula: (NH4)2Mg(SO4)26(H2O). The formula of boussingaultite is that of Tutton’s salts type. It is consisting of…
Bournonite: Properties and Occurrences

Bournonite: Properties and Occurrences

Bournonite is a sulfosalt mineral species, trithioantimoniate of lead and copper with the formula PbCuSbS3. It is a mineral in medium temperature hydrothermal vein deposits.…
Boulangerite

Boulangerite

Boulangerite is a sulfosalt mineral, lead antimony sulfide, formula Pb5Sb4S11. It is one of a few sulfide minerals that form fine acicular crystals that appear…
Botryogen

Botryogen

Botryogen is a hydrous magnesium sulfate mineral with formula: MgFe3+(SO4)2(OH)·7H2O. It is also known as quetenite. It was first described in 1828 for an occurrence…
Botallackite: Properties and Occurrences

Botallackite: Properties and Occurrences

Botallackite, chemical formula Cu2(OH)3Cl is a secondary copper mineral, named for its type locality at the Botallack mine, St Just in Penwith, Cornwall. It was…
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