Mineral Specimen Images (C)

Chalconatronite: Na2Cu(CO3)2·3(H2O)  
Sanromanite: Na2CaPb3(CO3)5  
Juangodoyite: Na2Cu(CO3)2

Comments: Yellowish, long balded sanromanite crystals in vug with platy, blue juangodoyite replacing green chalconatronite.
Location: Santa Rosa mine, Iquique Province, Tarapaca, Chile. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Chalcophanite: (Zn,Fe++,Mn++)Mn++++3O7·3(H2O)

Comments: Large mass of rounded gray-black chalcophanite.
Location: Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA. Scale: 14x11x7 cm.
© John Betts - Fine Minerals

Chalcophyllite: Cu++18Al2(AsO4)3(SO4)3(OH)27·33(H2O)

Comments: Altered rhyolite vug lined with chalcophyllite crystals. The largest crystal is 0.5 cm across and several have the perfect "stop sign" hexagon form.
Location: Majuba Hill Mine, Pershing County, Nevada, USA. Scale: Picture size 2 cm.
© John Veevaert

Chalcopyrite: CuFeS2  
Quartz: SiO2

Comments: Well-formed crystals of chalcopyrite and quartz.
Location: Boldut mine, 61 level (350 meters deep), Cavnic, Maramures, Rumania. Scale: 5.5 x 3.5 cm.
© Fabre Minerals

Chalcopyrite: CuFeS2  
Moncheite: (Pt,Pd)(Te,Bi)2

Comments: White moncheite with chalcopyrite (orange, blue and violet tarnishing colors) in silicate matrix. Polished section (from microprobe analysis) in reflected light.
Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia. Scale: Picture size 0.11 mm.
© Thomas Witzke / Abraxas-Verlag

Chalcopyrite: CuFeS2  
Oulankaite: (Pd,Pt)5(Cu,Fe)4SnTe2S2  
Telargpalite: (Pd,Ag)3Te  
Tulameenite: Pt2FeCu

Comments: Gray long-prismatic crystal of oulankaite with light grayish telargpalite and pale yellowish-white rims of tulameenite in massive yellowish chalcopyrite. Polished section (from microprobe analysis) in reflected light.
Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia. Scale: Picture size 0.12 mm.
© Thomas Witzke / Abraxas-Verlag

Chalcosiderite: CuFe+++6(PO4)4(OH)8·4(H2O)

Comments: Pale bluish transparent crystal of chalcosiderite on matrix.
Location: Cornwall, England. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Chalcostibite: CuSbS2

Comments: Partial crystal of chalcostibite. The crystal is partially altered to blue azurite and green malachite.
Location: Gar El Anz, Morocco. Scale: 3 x 1.8 cm.
© John Veevaert

Chalcostibite: CuSbS2

Comments: Dark gray crystals of chalcostibite on white quartz matrix.
Location: Boldut mine, Cavnic Maramures, Rumania. Scale: 7 x 7 x 3.5 cm.
© Fabre Minerals

Chalcothallite: (Cu,Fe)6Tl2SbS4

Comments: Gray-black, platy chalcothallite aggregates in matrix.
Location: Taseq Slope, Ilimaussaq Complex, Narsaq, Kitaa, West Greenland, Denmark. Scale: Specimen Size 6x20 mm.
© Diederik Visser

Challacolloite: KPb2Cl5

Comments: White to transparent challacolloite crystals on matrix.
Location: Eruption of 1855, Mount Vesuvius, Campania, Italy. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Chambersite: Mn3B7O13Cl

Comments: Tetragonal crystals of chambersite extracted from salt dome deposits.
Location: Barkers Hill, Mont Belvieu, Chambers County, Texas, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Chamosite: (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8

Comments: Dark green sectile massive chamosite.
Location: Jalgaon, Maharashtra, India. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Changbaiite: PbNb2O6

Comments: BSE image of a zircon grain with inclusions of bastnasite? (bs), columbite (cb), cerofluorite (ce), chanbaiite (ch), cryolite (cry), thorite (th), xenotime (xe) and niobium-rich iron oxides (Nb-Fea).
Location: Rhyolite laccoliths from the Sierra Blanca Peaks, Trans-Peco region, Texas. (AmMin, v 74:865). Scale: See Image.
© American Mineralogist

Chaoite: C

Comments: Dark masses of chaoite intermixed with graphite on rock shocked by meteorite impact.
Location: Ries Crater, Bopfingen, Bavaria, Baden-Wurttemberg. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Chapmanite: Sb+++Fe+++2(SiO4)2(OH)

Comments: Green, earthy chapmanite on quartz-sulfide matrix.
Location: Neue Hoffnung Gottes Mine, Bräunsdorf, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Charlesite: Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12·26(H2O)

Comments: 1 cm white crystal of charlesite on calcite with small (2 mm) octahedral crystals of galena.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: Picture size 2.5 cm.
© John Veevaert

Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)

Comments: Polished slab of purple charoite.
Location: Murun Massif, Chara River, Davan, Torgo River Basin, Aldan Shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 6.5 cm.
© Thomas Witzke / Abraxas-Verlag

Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)  
Fedorite: KNa4Ca4(Al,Si)16O36(OH,F)4·6(H2O)

Comments: Tan crystalline platy fedorite in pale violet charoite.
Location: Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)  
Tinaksite: K2Na(Ca,Mn++)2(Ti,Fe)O[Si7O18(OH)]

Comments: Yellow-brown prismatic tinaksite crystals in purple charoite with black aegirine.
Location: Murun, Aldan Uplift, Chara and Olekma Rivers, near Olekminsk, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species