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Lepidocrocite: FeO(OH)
Comments: Translucent, red-brown crystals of lepidocrocite lining cavities in gossan matrix. Location: Eisenzecher Zug Mine, Eiserfeld, Siegen District, North Rhine-Westphalia, Germany. Scale: 7x5x3 cm. © John Betts - Fine Minerals
Lepidolite: K(Li,Al)3(Si,Al)4O10(F,OH)2
Comments: Pale lavender micaceous plates of lepidolite on matrix. Location: Minas Gerais, Brazil. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Lepidolite: K(Li,Al)3(Si,Al)4O10(F,OH)2 Nanpingite: Cs(Al,Mg,Fe++,Li)2(Si3Al)O10(OH,F)2
Comments: Hexagonal tabular crystals of pearly colourless lepidolite within massive white pollucite from unknown rare metal pegmatite. Nanpingite forms the outer zones of these lepidolite crystals (~30-150 µm). Location: China. Scale: Specimen size is 3.5x3x2 cm. © Pavel M. Kartashov
Lepkhenelmite-Zn: Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O)
Comments: B&W image of fragments of lepkhenelmite-Zn. Location: Lepkhe-Nel'm Mt., Lovozero, Kola, Russia. Scale: See Image. © Diederik Visser
Lesukite: Al2(OH)5Cl·2(H2O)
Comments: Yellow to orange-yellow lesukite. Location: Deutschlandschacht Mine, Oelsnitz, Zwickau, Saxony, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Letovicite: (NH4)3H(SO4)2
Comments: Pearly opaque white crystalline letovicite on matrix. Location: Kladno, Stredocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Leucite: KAlSi2O6
Comments: Large single crystal of dark gray leucite. Location: Roccamonfina, Caserta Province, Campania, Italy. Scale: 20x20x20 mm. © John Betts - Fine Minerals
Leucophanite: (Na,Ca)2BeSi2(O,OH,F)7
Comments: Pseudo-cubic crystals of leucophanite. Location: Mont St. Hilaire, Quebec, Canada. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Leucophoenicite: Mn7(SiO4)3(OH)2
Comments: Cinnamon brown crystals of leucophoenicite over deep reddish pink crystals of rhodochrosite. Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 8 x 4.2 cm. © John Veevaert
Leucophosphite: KFe+++2(PO4)2(OH)·2(H2O)
Comments: Transparent greenish brown microcrystal of leucophosphite. Location: Lone Tree Mine, Humboldt County, Nevada, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Crude or etched purple crystals of leucophospiite to 1mm in vuggy triphylite matrix. Location: Tip Top mine, Custer Co., South Dakota, USA. Scale: Picture size 1 cm. © Tom Loomis / Dakota Matrix