Science

Lulzacite: Properties and Occurrences

Lulzacite: Properties and Occurrences

Lulzacite is a strontium-containing phosphate mineral with the chemical formula Sr2Fe2+(Fe2+, Mg)2Al4(PO4)4(OH)10. It is a triclinic-pinacoidal mineral containing aluminum, hydrogen, iron, magnesium, oxygen, phosphorus, and strontium. It occurs there as a dark grey to green granular aggregates wi.....

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Ludwigite: Properties and Occurrences

Ludwigite: Properties and Occurrences

Ludwigite is a magnesium-iron borate mineral: Mg2FeBO2. It is typically formed in magnesian iron skarn and contact metamorphic deposits. It is a mineral consisting of an iron magnesium borate occurring in fibrous masses of a blackish green color. It was first described in 1874 for an occurrence i.....

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Ludlamite: Properties and Occurrences

Ludlamite: Properties and Occurrences

Ludlamite is a rare phosphate mineral with formula: (Fe, Mn, Mg)3(PO4)2·4H2O. It is a classic phosphate mineral. It is a mineral occurring in small, green, transparent, monoclinic crystals. It is a hydrous phosphate of iron. It was first described in 1877 for an occurrence in Wheal Jane mine in .....

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Loveringite: Properties and Occurrences

Loveringite: Properties and Occurrences

Loveringite is a rare metallic oxide mineral of the crichtonite group with the chemical formula (Ca, Ce) (Ti, Fe, Cr, Mg)21O38. It is a trigonal-rhombohedral black mineral containing aluminum, calcium, cerium, chromium, iron, magnesium, oxygen, titanium, vanadium, and zirconium. It is a late-stag.....

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Lorenzenite: Properties and Occurrences

Lorenzenite: Properties and Occurrences

Lorenzenite is a rare sodium titanium silicate mineral with the formula Na2Ti2Si2O9. It has green cathodoluminescence and will fluoresce pale yellow or dull green in short-wave ultraviolet light. It was first identified in 1897 in rock samples from Narsarsuk, Greenland. It is an orthorhombic-dipy.....

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Lorándite: Properties and Occurrences

Lorándite: Properties and Occurrences

Lorándite is a thallium arsenic sulfosalt with the chemical formula: TlAsS2. Though rare, it is the most common thallium-bearing mineral. It is cochineal- to carmine-red or dark lead-gray mineral composed of thallium sulfarsenide, occurring in monoclinic form. Lorándite was first discovered at .....

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Lopezite: Properties and Occurrences

Lopezite: Properties and Occurrences

Lopezite is a rare red chromate mineral with chemical formula: K2Cr2O7. It crystallizes in the triclinic crystal system. It is a rare red triclinic chromate mineral. It is also an orange-red mineral composed of potassium dichromate. It is a mineral consisting of dichromate of potassium and found .....

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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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