's Image Gallery

Cafarsite: Ca8(Ti,Fe++,Fe+++,Mn)6-7(As+++O3)12·4(H2O)

Comments: Octahedron of cafarsite with a green coloration (?) on a gneiss matrix.
Location: Vasl D' Aosta, Italy. Scale: 4.6x4.5x3.2 cm.
© Isaias Casanova / IC Minerals

Cafarsite: Ca8(Ti,Fe++,Fe+++,Mn)6-7(As+++O3)12·4(H2O)

Comments: Small, cubic crystal of cafarsite on matrix.
Location: Wannigletscher, Binntal, Switzerland. Scale: Crystal size 0.5 cm.
© Rob Lavinsky

Cafetite: Ca(Fe,Al)2Ti4O12·4(H2O)

Comments: Ocher-colored aggregates of cafetite in pegmatite, intimately mixed with iron hydroxides.
Location: Mount Rasvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cahnite: Ca2B(AsO4)(OH)4

Comments: White, translucent cahnite crystal on hodgkinsonite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Calaverite: AuTe2

Comments: Quartz matrix with abundant calaverite crystals.
Location: Cripple Creek, Teller County, Colorado, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Calciborite: CaB2O4

Comments: Translucent colorless crystalline calciborite.
Location: Novofrolovskoye, Sverdlovsk District, Northern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calcioancylite-(Ce): CaCe(CO3)2(OH)·(H2O)

Comments: Gray calcio-ancylite pseudomorphs after remondite crystals up to 4 cm long.
Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mt Saint-Hilaire, Rouville Co., Québec, Canada. Scale: 5x4x4 cm.
© John Betts - Fine Minerals

Calcioandyrobertsite-1M: KCaCu5(AsO4)4[As(OH)2O2]·2(H2O)  
Tennantite: (Cu,Fe)12As4S13

Comments: Vein of blue calcioandyrobertsite in massive dark gray tennantite. The vein of calcioandyrobertsite extends for 0.8cm.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Specimen size 1.1 x 0.5 cm.
© John Veevaert

Calcioburbankite: Na3(Ca,REE,Sr)3(CO3)5  
Aegirine: NaFe+++Si2O6

Comments: Tan crystal spray of calcioburbankite on dark green aegirine.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calciocopiapite: CaFe+++4(SO4)6(OH)2·19(H2O)

Comments: Greenish yellow crystalline crust of calciocopiapite.
Location: Borate, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calcioferrite: Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4·12(H2O)

Comments: Whitish green botryoidal crust of calcioferrite on matrix.
Location: Brugues, Barcelona, Catalunya, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calciogadolinite: CaREE(Fe+++)Be2Si2O10  
Gadolinite-(Y): Y2Fe++Be2Si2O10

Comments: Black vitreous, metamict massive gadolinite-(Y) also known as calcian gadolinite.
Location: Ytterøya Mine, Røvika, Ytterøya (island), Levanger, Nord-Trondelag, Norway. Scale: See Image.
© Rruff Database

Calciohilairite: CaZrSi3O9·3(H2O)  
Kuzmenkoite-Mn: (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O)

Comments: White rhombododecahedral crystals of calciohilairite associated with orange=brown stout prismatic kuzmenkoite-Mn on matrix.
Location: Flora Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: FOV ~1x1 cm.
© Pavel M. Kartashov

Calciopetersite: CaCu6[(PO4)2(PO3OH)(OH)6]·3(H2O)

Comments: SEM image of calciopetersite in fine radiating spray; note the hexagonal outline of crystals. (CanMin, v43:1393).
Location: Domasiov nad Bystrici, Czech Republic. Scale: See Image.
© J. Sejkora / Canadian Mineralogist

Calciotantite: Ca(Ta,Nb)4O11  
Tantalite-(Mn): MnTa2O6

Comments: SEM image showing calciotantite (CT), manganotatntalite (MTT), microlite (MT) and lithiowodginite (LW) association.
Location: Granitic pegmatites, Kalba, Kazakhstan. Scale: Scale bar 100 µm and 10 µm.
© Diederik Visser

Calciouranoite: (Ca,Ba,Pb)U2O7·5(H2O)  
Metacalciouranoite: (Ca,Na,Ba)U2O7·2(H2O)

Comments: Cryptocrystalline looking, greasy yellow blotches, of amorphous calciouranoite (probably, in part, dehydrated to matacalciouranoite).
Location: Oktyabr'skoye Mo-U deposit, east Transbaikal region, Russia. Scale: See Image.
© Rruff Database

Calcite: CaCO3  
Quartz: SiO2

Comments: Purple-colored druse of amethystine quartz and white calcite.
Location: Rio Grande do Sul, Brazil. Scale: Sample size 20 cm.
© Dave Barthelmy

Calcite: CaCO3  
Beryl: Be3Al2Si6O18

Comments: Transparent emerald, the green variety of beryl on calcite (marble) matrix.
Location: Coscuez, Boyacá, Colombia. Scale: 2.5 x 2.5 cm.
© Fabre Minerals

Calcite: CaCO3

Comments: White, divergent calcite scalenohedral crystals.
Location: Santa Eulalia, Chihuahua, S.A., Mexico. Scale: 8 cm.
© Dave Barthelmy

Calcite: CaCO3

Comments: Cream-colored crystalline aggregate of calcite crystals.
Location: Rio Grande do Sul, Brazil. Scale: 20 cm.
© Dave Barthelmy