Geographic Minerals

Maucherite: Properties and Occurrences

Maucherite: Properties and Occurrences

Maucherite is a grey to reddish silver-white nickel arsenide mineral. It is a tetragonal nickel arsenide, occurring as brittle, opaque, reddish-grey crystals which have a metallic luster and tarnish on exposure. It is also known as placodine and Temiskamite. The unit cell is of symmetry group P4.....

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Petroleum – Properties and Occurrences

Petroleum – Properties and Occurrences

Petroleum is a naturally occurring, yellowish-black liquid found in geological formations beneath the Earth’s surface. It is commonly refined into various types of fuels. Components of petroleum are separated using a technique called fractional distillation, i.e. separation of a liquid mixt.....

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Matlockite: Properties and Occurrences

Matlockite: Properties and Occurrences

Matlockite a mineral (PbFCl) consisting of lead chloride and fluoride. It is a rare lead halide mineral, named after the town of Matlock in Derbyshire, England, where it was first discovered in a nearby mine. It is a tetragonal-ditetragonal dipyramidal mineral containing chlorine, fluorine, and l.....

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Mathesiusite: Properties and Occurrences

Mathesiusite: Properties and Occurrences

Mathesiusite is a new uranyl vanadate-sulfate mineral. It is a sulfate mineral containing potassium, vanadium, and uranium and has the chemical formula: K5(UO2)4(SO4)4(VO5)·4(H2O). It is a secondary mineral formed during post-mining processes.  It is a secondary mineral formed during post-minin.....

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Masuyite: Properties and Occurrences

Masuyite: Properties and Occurrences

Masuyite is a uranium/lead oxide mineral with formula Pb[(UO2)3O3(OH)2]·3H2O. It is a uranium/lead oxide mineral. It is made from the elements uranium, hydrogen, lead, and oxygen. It is an ingredient in bludgeons and swords. Masuyite was first described in 1947 for an occurrence in Katanga a.....

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Massicot: Properties and Occurrences

Massicot: Properties and Occurrences

Massicot is lead (II) oxide mineral with an orthorhombic lattice structure. It is a yellow form of lead monoxide, used as a pigment. It is a soft, powdery mineral, used in making rubber, glass, etc. Lead (II) oxide (formula: PbO) can occur in one of two lattice formats, orthorhombic and tetragona.....

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Mascagnite: Properties and Occurrences

Mascagnite: Properties and Occurrences

Mascagnite is a rare ammonium sulfate mineral (NH4)2SO4. It is a native ammonium sulphate found in volcanic districts. It crystallizes in the orthorhombic system typically forming as stalactitic masses exhibiting good cleavage. It is soluble in water; therefore it is rare. It is soft (not h.....

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Marthozite: Properties and Occurrences

Marthozite: Properties and Occurrences

Marthozite is an orthorhombic mineral that has a general formula of Cu(UO2)3(SeO3)3(OH)2·7H2O. It is an orthorhombic-pyramidal mineral containing copper, hydrogen, oxygen, selenium, and uranium. It was named in honor of Aime Marthoz, a former Director of the Union Miniere de Haut-Katanga in what.....

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Marrite: Properties and Occurrences

Marrite: Properties and Occurrences

Marrite is depicted by the chemical formula PbAgAsS3. It is a monoclinic-prismatic mineral containing arsenic, lead, silver, and sulfur. It is the arsenic equivalent of mineral freieslebenite (PbAgSbS3) but also displays close polyhedral characteristics with sicherite and diaphorite. Marrite was .....

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Maricite: Properties and Occurrences

Maricite: Properties and Occurrences

Maricite or marićite is a sodium iron phosphate mineral (NaFe2+PO4), that has two metal cations connected to a phosphate tetrahedron. It is an orthorhombic-dipyramidal mineral containing iron, oxygen, phosphorus, and sodium. It is structurally similar to the much more common mineral olivine. It .....

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Marialite: Properties and Occurrences

Marialite: Properties and Occurrences

Marialite is a silicate mineral with a chemical composition of Na4Al3Si9O24Cl if a pure endmember or  Na4(AlSi3O8)3 (Cl2, CO3, SO4) with increasing meionite content. It is the sodium-rich end member of the Scapolite series. It is a member of the scapolite group and a solid solution exists betwe.....

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Margarite: Properties and Occurrences

Margarite: Properties and Occurrences

Margarite is a pink pearly micaceous mineral consisting of hydrated calcium aluminum silicate. It is a calcium-rich member of the mica group of the phyllosilicates with the formula: CaAl2(Al2Si2)O10(OH)2. It is a gray, pink, or yellow mica, occurring in brittle monoclinic crystals. It forms white.....

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