Mineral Specimen Images (L)

Loparite-(Ce): (Ce,Na,Ca)2(Ti,Nb)2O6  
Perrierite-(Ce): (Ce,La,Ca)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22  
Pyrochlore: (Na,Ca)2Nb2O6(OH,F)  
Zircon: ZrSiO4

Comments: Reddish black perrierite crystal, with orange-brown pyrochlore crystal, yellow-brown zircon, and grayish-black loparite.
Location: Buer, Bjorkedalen, Langesundfjord, Telemark, Norway. 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

Lorandite: TlAsS2  
Fangite: Tl3AsS4

Comments: Brown crystals of fangite with red lorandite.
Location: Allchar, Roszdan, FYR Macedonia. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Lorandite: TlAsS2

Comments: Gemmy, transparent reddish brown crystals of lorandite on matrix.
Location: Allchar, near Majdan, Macedonia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Lorenzenite: Na2Ti2Si2O9  
Orthoclase: KAlSi3O8

Comments: Striated, dark violet crystal of lorenzenite in cream-colored orthoclase.
Location: Khibiny Massif, Kola Peninsula, Russia. Scale: 1.3 x 1.2 cm.
© John Veevaert

Lorenzenite: Na2Ti2Si2O9  
Vuonnemite: Na11Nb2TiSi4O12(PO4)2O5F2

Comments: Square vuonnemite crystal with brown, lorenzenite crystals in syenite rock.
Location: Ilimaussaq, Greenland. 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

Lotharmeyerite: CaZnMn+++(AsO3OH)4(OH)3

Comments: Brown, prismatic crystals lotharmeyerite on matrix.
Location: Ojuela mine, Mapimi, Durango, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Loudounite: NaCa5Zr4Si16O40(OH)11·8(H2O)

Comments: SEM image of several spherulitic aggregates of loudounite with acicular actinolite. AmMin, 21:37.
Location: Goose Creek quarry, Loudoun County, Virginia, USA. Scale: Scale Bar 50 µm.
© American Mineralogist

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

Lourenswalsite: (K,Ba)2(Ti,Mg,Ca,Fe)4(Si,Al,Fe)6O14(OH)12  
Aegirine: NaFe+++Si2O6

Comments: Light brownish rosettes of lourenswalsite with dark green crystals of aegirine and white feldspar.
Location: Diamond Jo quarry, Magnet Cove, Hot Springs Co., Arkansas, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Lovdarite: K2Na6Be4Si14O36·9(H2O)

Comments: Bright white crystal sprays of lovdarite on fine-grained white natrolite.
Location: Yubileinaya Pegmatite, Mount Karnasurt, Lovozero Massif, Kola Peninsula, Murmansk, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Loveringite: (Ca,Ce)(Ti,Fe+++,Cr,Mg)21O38

Comments: Small clusters of tiny (20 microns) black metallic acicular joveringite crystals in/on phlogopite.
Location: Jimbelana Dyke, Norseman, Western Australia, Australia. Scale: Specimen Size 2.5x4 cm.
© Diederik Visser

Lovozerite: H4Na2Ca(Zr,Ti)[Si6O18]

Comments: Pinkish lovozerite with red crystalline eudialyte.
Location: Mount Rasvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Loweite: Na12Mg7(SO4)13·15(H2O)

Comments: Opaque white crystalline löweite with clear colorless halite.
Location: Wilhelmshall, near Stassfurt, Sachsen-Anhalt, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Luanheite: Ag3Hg

Comments: Inclusions of luanheite, in tellurium, in quartz.
Location: Mina Bambolla, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lucasite-(Ce): CeTi2(O,OH)6

Comments: B&W image of a striated, euhedral lucasite-(Ce) crystal showing {001} and {101} faces. The dark substrate is calcite. (AmMin, v72:1006).
Location: Heavy-mineral concentrate derived from an olivine lamproite tuff at Argyle, in the east Kimberley region of Western Australia. Scale: See Image.
© American Mineralogist

Luddenite: Pb2Cu2Si5O14·14(H2O)

Comments: Light green crystalline crust of luddenite in patches to 1mm on matrix with colorless micro-crystals that are possibly alamosite and wickenbergite.
Location: Rawhide mine, Artillery Peak dist., Mohave Co., Arizona, USA. Scale: Overall: 4 x 3.5 x 3.5 cm.
© Tom Loomis / Dakota Matrix

Ludjibaite: Cu5(PO4)2(OH)4

Comments: Coating of intense blue-green microcrystals and crystalline ludjibaite.
Location: Shituru, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ludlamite: (Fe++,Mg,Mn)3(PO4)2·4(H2O)

Comments: crystal group of Ludlamite.
Location: Huanuni Mine, Oruro Department, Bolivia. Scale: Crystal size 1.5 x 1 cm.
© John Veevaert