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Crednerite: CuMnO2 Mendipite: Pb3Cl2O2 Chloroxiphite: Pb3CuCl2(OH)2O2
Comments: Radiating compact with clear to white crystalline mendipite with black crednerite and green chloroxiphite. Location: Mendip Hills, Somerset, England. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Creedite: Ca3Al2(SO4)(F,OH)10·2(H2O)
Comments: Colorless, bladed creedite crystals. Location: Mina Navidad, Durango, Mexico. Scale: Crystal size 1.4 cm. © John Veevaert
Creedite: Ca3Al2(SO4)(F,OH)10·2(H2O) Fluorite: CaF2
Comments: Well-developed, prismatic, reddish creedite crystals on green fluorite. Location: Mina Navidad, Rodeo, Durango, Mexico. Scale: 9 x 5 x 5.3 cm. © Fabre Minerals
Creedite: Ca3Al2(SO4)(F,OH)10·2(H2O) Smithsonite: ZnCO3
Comments: Purple transparent crystals of creedite to 6 mm on matrix of creamy botryoidal crystalline smithsonite. Location: Level 8 San Antonio mine, Santa Eulalia, Chihuahua, Mexico. Scale: 7 x 3.5 x 2 cm. © Dan Weinrich
Crichtonite: (Sr,La,Ce,Y)(Ti,Fe+++,Mn)21O38
Comments: Black crichtonite crystal in quartz. Location: Kriegalptal, Binntal, Wallis (Valais), Switzerland. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Criddleite: TlAg2Au3Sb10S10 Aurostibite: AuSb2
Comments: B&W polished section image of criddleite (grey) surrounding and penetrating aurostibite (white) within quartz gangue. (MinMag, v52:691). Location: Hemlo gold deposit, Hemlo, Ontario, Canada. Scale: See Image. © Mineralogical Magazine
Cristobalite: SiO2
Comments: White crystals of cristobalite frozen in obsidian glass. Location: Cerro San Cristobal, Pachuca, Hidalgo, Mexico. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Crocoite: PbCrO4
Comments: Prismatic crystals of red-orange crocoite. Location: Adelaide Mine, Dundas, Tasmania. Scale: Specimen size 5 cm. © Dave Barthelmy
Crocoite: PbCrO4 Vauquelinite: Pb2Cu(CrO4)(PO4)(OH)
Comments: Olive-greenish vauquelinite encrusting red crocoite. Location: Callenberg North (no. 1) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Crocoite: PbCrO4 Coronadite: Pb(Mn++++,Mn++)8O16
Comments: Black coronadite with red crocoite on matrix. Location: Callenberg North (no. 1) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Specimen size 7 cm. © Thomas Witzke / Abraxas-Verlag
Cronstedtite: Fe++2Fe+++(SiFe+++)O5(OH)4
Comments: Pyramidal crystals of cronstedtite. Location: Santa Eulalia, Chihuahua, Mexico. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Cronusite: Ca0.2(H2O)2CrS2
Comments: Light gray grain of cronusite. Polished section (from microprobe analysis) in reflected light. Location: Enstatite meteorite, Norton Co., Kansas, USA. Scale: Picture size 0.18 mm. © Thomas Witzke / Abraxas-Verlag
Crookesite: Cu7(Tl,Ag)Se4 Eucairite: CuAgSe
Comments: Polished section (PPL) showing zoned crystal of cream-colored eucairite and pale lavender crookesite along with steel blue umangite and white clausthalite in dark gray gangue.. Location: Mine dump (tailings) of Shaft 371 near Hartenstein/Saxony, Germany. Scale: Picture size 5 mm. © Thomas Schlothauer
Crossite: Na2(Mg,Fe++)3(Al,Fe+++)2Si8O22(OH)2
Comments: Black prismatic crystal clusters of crossite. Location: near Valley Ford, Sonoma County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Long metallic, black, prismatic crystals or crossite on matrix. Location: Webbing, Lammertal, Salzburg, Austria. Scale: Picture size 2.5 mm. © Tom Loomis / Dakota Matrix
Cryolite: Na3AlF6 Ralstonite: NaxMgxAl2-x(F,OH)6·(H2O)
Comments: Massive cryolite with solution cavities lined with octahedral ralstonite crystals. Location: Ivigtut, Greenland. Scale: Picture size 0.5 cm. © John Veevaert
Cryolite: Na3AlF6 Thomsenolite: NaCaAlF6·(H2O)
Comments: Massive, white cryolite with solution cavities lined with prismatic Thomsenolite crystals. Location: Ivigtut, Greenland. Scale: . © John Veevaert
Cryolite: Na3AlF6
Comments: Massive cryolite with one section of lustrous crystal faces. Location: Ivigtut, Greenland. Scale: Picture size 4 cm. © John Veevaert
Cryolite: Na3AlF6 Cryolithionite: Na3Li3Al2F12
Comments: White translucent crystalline cryolithionite in brown cryolite. Location: Ivigtut, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Red-brown crystalline massive cryolite. Location: Katugin River, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species