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Liottite: (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4·(H2O)
Comments: Transparent colorless liottite crystal on vesuvianite. Location: Pitigliano, Grosseto, Tuscany, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lipscombite: (Fe++,Mn)Fe+++2(PO4)2(OH)2
Comments: Light to dark green botryoidal lipscombite crust on rock. Location: Valmy, Humboldt County, Nevada, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Liskeardite: (Al,Fe+++)3(AsO4)(OH)6·5(H2O)
Comments: Botryoidal liskeardite crusts. Location: Saint Hillary, Cornwall, England. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Litharge: PbO Massicot: PbO
Comments: Dark red litharge with brownish-yellow scaly massicot and white cerussite. Location: Patagonia, Santa Cruz County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lithiowodginite: LiTa3O8
Comments: Black crystalline grains of lithiowodginite in pegmatite. Location: Tanco Mine, Bernic Lake, Manitoba, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lithosite: K6Al4Si8O25·(H2O)
Comments: Transparent nearly colorless lithosite in syenite rock. Location: Vuonnemiok River, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Litidionite: KNaCuSi4O10
Comments: Bright blue crystalline litidionite fragment. Location: Vesuvius, Campania, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lopezite: K2Cr2O7
Comments: yellowish granular lopezite. Location: Tarapaca, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Lorettoite: Pb7O6Cl2
Comments: Orange crystalline lorettoite in matrix. Location: Kombat Mine, Kombat, Otjozondjuba, Namibia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Loughlinite: Na2Mg3Si6O16·8(H2O) Bradleyite: Na3Mg(PO4)(CO3)
Comments: Silky fibrous veinlets of loughlinite with bradleyite. Location: Green River area, Sweetwater County, Wyoming, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species