Lyonsite: Properties and Occurrences
Lyonsite [Cu3Fe3+4 (VO4)6] is a rare black vanadate mineral that is opaque with a metallic luster. It is an orthorhombic-dipyramidal black mineral containing copper, iron,…
Geographic Minerals
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…
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…
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,…
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…
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…
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…
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…
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…
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…
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…
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…
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