Geographic Minerals

Bismite

Bismite

Bismite is a bismuth oxide mineral, bismuth trioxide or Bi2O3.  The mineral was named after the presence of bismuth in its composition. It is a monoclinic mineral, but the typical form of occurrence is massive and clay-like with no macroscopic crystals. The color varies from green to yellow. It .....

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Bischofite: Properties and Occurrence

Bischofite: Properties and Occurrence

Bischofite is a hydrous magnesium chloride mineral with formula MgC12·6H2O. is a hydrous magnesium chloride mineral that was first discovered in 1877 from the Leopoldshall and Stassfut, Germany. The mineral was named after Karl Gustav Bischo, German geologist, and mineral chemist, University of.....

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Birnessite: Properties and Occurrences

Birnessite: Properties and Occurrences

Birnessite (Na0.3Ca0.1K0.1)(Mn4+, Mn3+)2O4·1.5 H2O is an oxide mineral of manganese along with calcium, potassium, and sodium. The mineral was first described in 1956 from the Birness, Aberdeenshire, Scotland. It was named after the place of discovery. It has a dark brown to black color with a s.....

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Biotite: Properties and Occurrences

Biotite: Properties and Occurrences

Biotite is a common phyllosilicate mineral within the mica group, with the approximate chemical formula K(Mg, Fe)3AlSi3O10(F, OH)2. The name “biotite” is used in the field and in entry-level geology courses because these minerals generally cannot be distinguished without optical, chem.....

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Billwiseite: Properties and Occurrences

Billwiseite: Properties and Occurrences

Billwiseite is a very rare oxide mineral found at the pegmatite commonly referred to as “Stak Nala” located within a few hundred yards from the village of Toghla in the Stak Nala, Gilgit-Baltistan Pakistan. It has only been found as a coating on a single crystal of lepidolite. The sol.....

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Billietite

Billietite

Billietite is an uncommon mineral of Uranium that contains Barium. It has the chemical formula: Ba(UO2)6O4(OH)6•8H2O. Billietite is named after Valere Louis Billiet (1903–1944), Belgian crystallographer at the University of Ghent, Ghent, Belgium. It is an uncommon mineral of Uranium that cont.....

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Bílinite

Bílinite

Bílinite, formula- [Fe2+ Fe23+(SO4)·22H2O] is an iron sulfate mineral. It is a product of the oxidation of pyrite in water. It is an acidic mineral that has a pH of less than 3 and is harmful to the environment when it comes from acid rock drainage (Keith et al., 2001). Bílinite was first disc.....

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Biehlite

Biehlite

Biehlite is an exceptionally rare mineral, an antimony arsenic-bearing molybdate with formula [(Sb, As)O]2MoO4. It is a rare secondary mineral from an oxidized zone in a dolostone-hosted hydrothermal polymetallic ore deposit. It comes from Tsumeb. It was named after Dr. Friedrich Karl Biehl (1887.....

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Bicchulite: Properties and Occurrences

Bicchulite: Properties and Occurrences

Bicchulite has an ideal chemical formula of 2CaO •Al2O3•SiO2•H2O, which was formularized from the hydrothermal synthesis of synthetic gehlenite (2CaO •Al2O3•SiO2). Also, it was sighted in the mines of Japan with related minerals. This sodalite-type structured has an uncommon ratio of al.....

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Beudandite: Properties and Occurrences

Beudandite: Properties and Occurrences

Beudandite is a secondary mineral occurring in the oxidized zones of polymetallic deposits. It is a lead, iron, arsenate, sulfate with endmember formula: PbFe3(OH)6SO4AsO4. is a secondary mineral that was first described in 1826 for an occurrence in the Louise Mine, Wied Iron Spar District, Weste.....

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Beryllonite

Beryllonite

Beryllonite is a rare sodium beryllium phosphate mineral with formula NaBePO4. It is a rare mineral that occurs as a secondary mineral in granitic and alkalic pegmatites. It is named because of its beryllium content. It was discovered by James Dwight Dana in 1888. The tabular to prismatic monocli.....

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Beryl: Properties and Occurrence

Beryl: Properties and Occurrence

Beryl is a mineral composed of beryllium aluminum cyclosilicate with the chemical formula Be3Al2(SiO3)6. It was named after the Greek word beryllos. The original significance of the name is unknown, but it may refer to the blue-green stones in the mineral. Well-known varieties of beryl include em.....

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