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Archive for March, 2011

Brookite

Tuesday, March 29th, 2011

The chemical formula of mineral Brookite is indicated by TiO2. Brookite is usually found at Magnet Cove near Hot Springs, Arkansas, USA. Mineral Brookite was named after the English mineralogist, Henry James Brucke (1771-1857), a London mineralogist and wool trader. Brookite is known to crystallize in the orthorhombic system of crystal formation. In optical mineralogy, […]

Brokenhillite

Tuesday, March 29th, 2011

The chemical composition of mineral Brokenhillite is indicated by the formula (Mn,Fe)32[Si24O60]OH29Cl11. Brokenhillite was discredited as being manganpyrosmalite which has priority. Mineral Brokenhillite is commonly found at its type of locality at Broken Hill, New South Wales, Australia. Mineral Brokenhillite is commonly found crystallizing in the hexagonal system of crystal formation. In optical mineralogy, the […]

Brindleyite

Tuesday, March 29th, 2011

The chemical composition of mineral Brindleyite is indicated by the formula (Ni,Mg,Fe++)2Al(SiAl)O5(OH)4. Mineral Brindleyite is also commonly found as coatings on clays and as veinlets cutting kaolinitic clay at the base of a bauxite deposit developed on karst. Brindleyite is also commonly found at its type of locality at Marmara bauxite deposit, Begara, Greece. This […]

Bredigite

Tuesday, March 29th, 2011

The chemical formula of mineral Bredigite is indicated by Ca7Mg(SiO4)4. This mineral Bredigite is commonly found in contact metamophosed limestones and dolostones intruded by diabase. Bredigite is commonly found at its type of locality in the USA, at Marble Canyon, Culberson Co., Texas. It can be found in Ireland, at Scawt Hill and Ballycraigy, near […]

Brochantite

Tuesday, March 29th, 2011

The chemical formula of mineral Brochantite Cu4(SO4)(OH)6. Brochantite is known to be a secondary mineral, formed in arid climates or in rapidly oxidizing copper sulfide deposits. Chuquicamata, Chile. This mineral was named after the French geologist and mineralogist, A. J. M. Brochant de Villiers (1772-1840). Brochantite is known to crystallize in the monoclinic system of […]

Britvinite

Tuesday, March 29th, 2011

The chemical composition of mineral Britvinite is indicated by the formula Pb7+xMg4.5[(Si,Al)5O14](BO3)(BO3,AsO4)(CO3)(OH,O)7 ( x < 0.5). Britvinite is commonly found in a layer silicate. Britvinite is usually found at its type of locality at Langban deposit, Bergslagen ore region, Filipstad district, Värmland, Sweden. Mineral Britvinite was named for Sergei Nikolaevich Britvin (b. 1965), a Russian […]

Brugnatellite

Tuesday, March 29th, 2011

The chemical composition of mineral Brugnatellite is indicated by the formula Mg6Fe3+(CO3)(OH)13•4(H2O). This mineral is most commonly found in serpentinites. Brugnatellite is most commonly found occuring at its type of locality at Asbestos mine at Torre Santa Maria, Val Malenco. Lombardy, Italy. This mineral was named after Luigi Brugnatelli (1859-1928), mineralogist, University of Pavia, Italy. […]

Brownmillerite

Tuesday, March 29th, 2011

The chemical formula of mineral Brownmillerite is indicated by Ca2(Al,Fe+++)2O5. Brownmillerite is usually found in a thermally metamorphosed limestone blocks included in volcanic rocks. Brownmillerite is commonly found at its type of locality at Ettringer-Bellerberg volcano, near Mayen, Eifel district, Germay. Mineral Brownmillerite was named for Lorrin Thomas Brownmiller (1902-), Chef chemist of the Alpha […]

Bromellite

Tuesday, March 29th, 2011

The chemical formula of mineral Bromellite is indicated by BeO. Mineral Bromellite is most commonly found occuring with swedenborgite. Bromellite is usually found at its type of locality at Langbanshyttan, Vermland, Sweden. This mineral was named for Magnus von Bromell (1670-1731), Swedish physician and mineralogist. Mineral Bromellite is known to crystallize in the hexagonal system […]

Britholite-(Ce)

Tuesday, March 29th, 2011

The chemical composition of mineral Britholite-(Ce) is indicated by the formula (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F). This mineral is most commonly found in nepheline syenites, pegmatites and contact deposits related to them. Britholite-(Ce) is usually found from its type of locality at Julianehaab, South Greenland. This mineral Britholite-(Ce) was named from the Greek for weight, in allusion to its […]

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