Science

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 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 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 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 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 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 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 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 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…

“Trigon” is Greek for the triangle, and “metric” is Greek for measurement. The trigonometric ratios are special measurements of a right triangle (a triangle with…

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…

Bornite, also known as peacock ore, is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the orthorhombic system (pseudo-cubic). It was named after…