Geographic Minerals

Loparite-(Ce): Properties and Occurrences

Loparite-(Ce): Properties and Occurrences

Loparite-(Ce) is a granular, brittle oxide mineral of the perovskite class. It is a brown to black mineral; a variety of perovskite containing alkalies and cerium. It has the chemical formula of (Ce, Na, Ca) (Ti, Nb)O3. Nioboloparite is a variation of Loparite-(Ce) containing niobium. Loparite co.....

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Lonsdaleite: Properties and Occurrences

Lonsdaleite: Properties and Occurrences

Lonsdaleite also called a hexagonal diamond in reference to the crystal structure, is an allotrope of carbon with a hexagonal lattice. The great heat and stress of the impact transforms the graphite into diamond but retains graphite’s hexagonal crystal lattice. It is a hexagonal-dihexagonal.....

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Loellingite: Properties and Occurrences

Loellingite: Properties and Occurrences

Loellingite, also spelled löllingite, is an iron arsenide mineral with formula FeAs2. It is a mineral consisting of a tin-white iron arsenide that is isomorphous with arsenopyrite and usually occurs massive. The orthorhombic lollingite group includes the nickel-iron arsenide rammelsbergite and t.....

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Lizardite: Properties and Occurrences

Lizardite: Properties and Occurrences

Lizardite, which is much more common, forms a solid solution series with népouite. Extremely fine-grained, scaly lizardite (also called orthoantigorite) comprises much of the serpentine present in serpentine marbles. It is triclinic, has one direction of perfect cleavage, and maybe white, yellow.....

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Népouite: Properties and Occurrences

Népouite: Properties and Occurrences

Népouite is a rare nickel silicate mineral which has the apple green color typical of such compounds. It is a mineral consisting of a hydrous nickel magnesium silicate. It was named by E Glasser in 1907 after the place where it was first described (the type locality), the Népoui Mine, Népoui, .....

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Livingstonite: Properties and Occurrences

Livingstonite: Properties and Occurrences

Livingstonite is a mercury antimony sulfosalt mineral. It is a mineral HgSb4S7 consisting of a lead-gray mercury antimony sulfide resembling stibnite. It occurs in low-temperature hydrothermal veins associated with cinnabar, stibnite, sulfur, and gypsum. It was first described in 1874 for an occu.....

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Liroconite: Properties and Occurrences

Liroconite: Properties and Occurrences

Liroconite is a complex mineral: Hydrated copper aluminum arsenate hydroxide, with the formula Cu2Al[(OH)4|AsO4]·4(H2O). It is a beautiful mineral that is not often available from any new sources. It is a vitreous monoclinic mineral, colored bright blue to green, often associated with malachite,.....

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Lipscombite: Properties and Occurrences

Lipscombite: Properties and Occurrences

Lipscombite, formula – (Fe2+, Mn2+)(Fe3+)2(PO4)2(OH)2 is a green-gray, olive green, or black. phosphate-based mineral containing iron, magnesium, and iron phosphate. It is a tetragonal-trapezohedral mineral containing hydrogen, iron, manganese, oxygen, and phosphorus. In the Classification .....

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Linnaeite: Properties and Occurrences

Linnaeite: Properties and Occurrences

Linnaeite is a cobalt sulfide mineral with the composition Co2+Co3+2S4. It was discovered in 1845 in Västmanland, Sweden, and was named to honor Carl Linnaeus (1707–1778). It is a mineral of pale steel-gray color and metallic luster that occurs in isometric crystals and also massive and that i.....

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Lindgrenite: Properties and Occurrences

Lindgrenite: Properties and Occurrences

Lindgrenite is an uncommon copper molybdate mineral with formula: Cu3(MoO4)2(OH)2. It occurs as tabular to platey monoclinic green to yellow-green crystals. It is a mineral consisting of a basic molybdate of copper. It was named after Professor Waldemar Lindgren, a Swedish-American economic geolo.....

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Linarite: Properties and Occurrences

Linarite: Properties and Occurrences

Linarite is a somewhat rare, crystalline mineral that is known among mineral collectors for its unusually intense, pure blue color. It is known for its exceptionally bright blue color. It is formed by the oxidation of galena and chalcopyrite and other copper sulfides. It is a combined copper lead.....

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Liebigite: Properties and Occurrences

Liebigite: Properties and Occurrences

Liebigite is a uranium carbonate mineral with the chemical formula: Ca2(UO2)(CO3)3·11H2O. It is an apple-green mineral consisting of hydrous uranium calcium carbonate and occurring as concretions or coatings. It is a secondary mineral occurring in the oxidizing zone of uranium-bearing ores. Lieb.....

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