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Latrappite: (Ca,Na)(Nb,Ti,Fe)O3
Comments: Black, sub-metallic crystals of latrappite on matrix. Location: La Trappe Quarry, Oka, Quebec, Canada. Scale: Crystal size 4 X 4 mm. © John Veevaert
Laubmannite: Fe++3Fe+++6(PO4)4(OH)12 Goethite: Fe+++O(OH)
Comments: Reddish brown goethite hosting radiating sprays of olive green laubmannite to 3 cm across. Location: Buckeye Mountain, Polk County, Arkansas, USA. Scale: 10.5 x 7.5 cm. © John Veevaert
Laueite: Mn++Fe+++2(PO4)2(OH)2·8(H2O)
Comments: Purple crystal of laueite on matrix. Location: Tip Top Mine, Custer County, South Dakota, USA. Scale: Crystal size 0.4 cm. © John Veevaert
Laumontite: CaAl2Si4O12·4(H2O)
Comments: Diamond-shaped prism of laumontite with chrysocolla. Location: Azurite mine, Pinal County, Arizona, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Comments: White, well developed laumontite crystals up to 1 cm. on matrix. Location: Osilo, Sardegna, Italy. Scale: Specimen size 6 x 4.5 cm. © Sandro Maggia/Minernet.it
Laurelite: Pb7F12Cl2
Comments: Snow white acicular crystals of laurelite. Location: Grand Reef mine, Graham Co., Arizona, United States. Scale: Crystal size 7 mm. © Tom Loomis / Dakota Matrix
Laurionite: PbCl(OH)
Comments: Colorless, stellate spray of acicular Laurionite crystals on matrix. Location: Laurium, Greece. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Laurite: RuS2 Hollingworthite: (Rh,Pt,Pd)AsS
Comments: Gray grain of hollingworthite (in the center of the picture) with very slightly darker gray laurite (at the right margin). Polished section (from microprobe analysis). Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm. © Thomas Witzke / Abraxas-Verlag
Laurite: RuS2 Kashinite: (Ir,Rh)2S3
Comments: Gray kashinite with darker gray laurite. Polished section (from microprobe analysis) in reflected light. Location: Nizhne-Tagil'skoye (Mednorudyanskoye) Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Urals Region, Russia. Scale: Picture size 0.2 mm. © Thomas Witzke / Abraxas-Verlag
Comments: Gray laurite with two smaller grains of hollingworthite (left and right from the laurite, very slightly lighter gray). Polished section (from microprobe analysis) in reflected light. Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.15 mm. © Thomas Witzke / Abraxas-Verlag
Lausenite: Fe+++2(SO4)3·6(H2O)
Comments: Pale tan crystalline powdery aggregate of lausenite. Location: United Verde Mine, Jerome, Yavapai County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lautarite: Ca(IO3)2
Comments: Sealed specimen jar with lautarite with nitratine.. Location: Atacama Desert, Chile. Scale: 3 cm Tall. © Adam Larson
Lautite: CuAsS
Comments: Metallic dark gray Lautite aggregate. Location: Rudolph Shaft, Lauta, Marienberg District, Erzgebirge, Saxony, Germany. Scale: Specimen size 3 cm. © Thomas Witzke / Abraxas-Verlag
Lavendulan: NaCaCu5(AsO4)4Cl·5(H2O)
Comments: Bright blue crystals of Lavendulan crystals. Location: Gold Hill mine, Deep Creek Mountains, Tooele County, Utah, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Lavenite: (Na,Ca)2(Mn,Fe++)(Zr,Ti,Nb)Si2O7(O,OH,F)
Comments: Orange crystalline lavenite grains in pegmatite. Location: Mount Takhtarvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lavrentievite: Hg3S2(Cl,Br)2
Comments: Yellow - brown lavrentievite with red cinnabar crystals in matrix. Location: Kadyrel'skoye Deposit, Tuva, Siberia, Russia. Scale: Not Given. © Diederik Visser
Lawrencite: (Fe++,Ni)Cl2
Comments: Capillary tube of lawrencite solution with opaque oxidized precipates, derived from hydrosocpically absorbing water from the air by solid lawrencite, collected from an oozing meteorite. Location: Nantan meteorites (Nandan meteorites), Lihu - Yaochai area, Nandan Co., Hechi Prefecture, Guangxi Zhuang Autonomous Region, China. Scale: Tube Width 0.25 mm. © Jeff Weissman / Photographic Guide to Mineral Species
Lawsonbauerite: (Mn,Mg)9Zn4(SO4)2(OH)22·8(H2O)
Comments: Brown, bladed coating of lawsonbauerite crystals on white calcite. Location: Sterling Hill, Ogdensburg, Sussex Co., New Jersey, USA. Scale: Specimen Size 8 x 7 x 4 cm. © Rob Lavinsky
Lawsonite: CaAl2Si2O7(OH)2·(H2O)
Comments: Glaucophane schist with a heavy druse of lawsonite crystals. Location: Reed Station, Tiburon, Marin County, California, USA. Scale: Crystal size 7 mm. © John Veevaert
Lazarenkoite: CaFe++As+++3O7·3(H2O)
Comments: Orange, fibrous lazarenkoite in a vug. Location: Khovu-Asky Ni-Co Deposit, Tuva Republic, Eastern-Siberian Region, Russia. Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag