Geographic Minerals

Mottramite: Properties and Occurrences

Mottramite: Properties and Occurrences

Mottramite is hydrous vanadate of lead and copper occurring as a crystalline incrustation of a velvet-black color on sandstone at Mottram in Cheshire, England. It is an orthorhombic anhydrous vanadate hydroxide mineral, PbCu(VO4)(OH), at the copper end of the descloizite subgroup. It is a mineral.....

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Rhodite – a naturally occurring alloy of gold

Rhodite – a naturally occurring alloy of gold

Rhodite is a mineral consisting of a native alloy of rhodium and gold. It is also known as, rhodian gold, is a naturally occurring alloy of gold and rhodium found in gold ore. It is a relatively unknown precious metal, possibly due to its global demand being concentrated in auto-catalysts, where .....

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Vanadate Mineral

Vanadate Mineral

Vanadate mineral Vanadate is a hard, silvery-grey, malleable transition metal. It is a mineral composed of vanadium, lead, oxygen, and chlorine. Vanadate mineral, any of the many naturally occurring compounds of vanadium (V), oxygen (O), and various metals; most of these minerals are rare, having.....

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Mosesite: properties and occurrences

Mosesite: properties and occurrences

Mosesite is a very rare mineral found in few locations. It is a mineral consisting of a hydrous nitride of mercury with other anions and water exchangeable within wide limits. It is a mercury mineral found as an accessory in deposits of mercury, often in conjunction with limestone. It is known to.....

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Moschellandsbergite: Properties and Occurrences

Moschellandsbergite: Properties and Occurrences

Moschellandsbergite is a rare isometric mineral made up of a silver-white amalgam of mercury and silver with the chemical makeup Ag2Hg3. It is a mineral consisting of a natural alloy or amalgam of silver and mercury. These minerals are very rare matrix moschellandsbergite from a famous and import.....

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Mordenite: Properties and Occurrences

Mordenite: Properties and Occurrences

Mordenite: Properties and Occurrences Mordenite is hydrated sodium, potassium, and calcium aluminosilicate mineral in the zeolite family. It is a zeolite mineral with the chemical formula, (Ca, Na2, K2)Al2Si10O24·7H2O, and it is one of the six most abundant zeolites and is used commercially. It .....

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Limestone (Classification, Uses)

Limestone (Classification, Uses)

Limestone is a sedimentary rock; it occurs primarily on the seafloor where calcium carbonate-rich (‘calcareous’ material) material accumulates. This calcareous material can be originally organic, chemical, or detrital. About 10% of the sedimentary rocks are lime. Karst landscapes are caused b.....

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Moolooite: Properties and Occurrences

Moolooite: Properties and Occurrences

Moolooite is a rare blue-green mineral, a hydrated copper oxalate with an orthorhombic crystalline structure. It is a mineral with the formula Cu++(C2O4)·n(H2O) (n<1) (copper oxalate hydrate). It was named for the original locality on Mooloo Station, Australia. It is a naturally occurring hyd.....

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Limestone (Description, Formation)

Limestone (Description, Formation)

Limestone is a sedimentary rock type of carbonate; it is predominantly composed of calcium carbonate (CaCO3), typically in the form of calcite or aragonite. It forms most frequently in clear, wet, shallow marine waters. Dolomite, which contains a high percentage of the mineral dolomite, CaMg(CO3).....

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Mooihoekite: properties and Occurrences

Mooihoekite: properties and Occurrences

Mooihoekite is a copper iron sulfide mineral with the chemical formula of Cu9Fe9S16. It is a tetragonal-scalenohedral mineral containing copper, iron, and sulfur. The mineral was discovered in 1972 and received its name from its discovery area, the Mooihoek mine in Transvaal, South Africa. Genera.....

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Montmorillonite: Properties and Occurrences

Montmorillonite: Properties and Occurrences

Montmorillonite is a very soft phyllosilicate group of minerals that form when they precipitate from water solution as microscopic crystals, known as clay. It is a natural source of minerals. It has been reported to contain at least 67 different minerals, including calcium, iron, magnesium, potas.....

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Monticellite: Properties and Occurrences

Monticellite: Properties and Occurrences

Monticellite and kirschsteinite (commonly also spelled kirschteinite) are gray silicate minerals of the olivine group with compositions CaMgSiO4 and CaFeSiO4, respectively. It is a grayish silicate mineral in the olivine family, calcium, and magnesium silicate, that occurs as small crystals or gr.....

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