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Minerals

6323 results

Calciopetersite Locality: Domašov nad Bystřicí, Sternberk (Sternberg), Olomouc Region, Moravia (Mähren; Maehren), Czech Republic Very small green acicular xls of Calciopetersite. Field of view 1,5 mm. Specimen and photo Leon Hupperichs. Mineral

Calciopetersite

calciopetersite

Formula
CaCu6(PO4)2(PO3OH)(OH)6·3H2O
Mineral

Calciopharmacoalumite

calciopharmacoalumite

Formula
Ca0,5Al4(AsO4)3(OH)4·5H2O
Mineral

Calciosamarskite

calciosamarskite

Formula
(Ca,Fe,Y)(Nb,Ta,Ti)O4
White crystals of the very rare tantalum mineral calciotantite from one of the few localities known worldwide (Ungursai, Irtysh River, Kalba Range, Eastern Kazakhstan Province, Kazakhstan), associated to minoritary thoreaulite. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Calciotantite

calciotantite

Formula
CaTa4O11
Dark brown crystal group of the rare uranium mineral calciouranoite from the type locality in Russia: Oktyabr'skoe Deposit, Krasnokamensk, Chitinskaya Oblast, Zabaykalsky Krai, Russian Federation. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Calciouranoite

calciouranoite

Formula
(Ca,Ba,Pb,K,Na)U2O7·5H2O
Mohs
4
Mineral

Calcioursilite

calcioursilite

Formula
Ca4(UO2)4(Si2O5)5(OH)6·15H2O
Crystals of calcioveatchite. FOV width is 6 mm. Mineral

Calcioveatchite

calcioveatchite

Formula
SrCaB11O16(OH)5·5H2O
Quarz, Calcit, Griewies, Rauris, Salzburg, Österreich Mineral

Calcite

Formula
CaCO3
Mohs
3
Colour
Colourless, white, many tints
White crystals of this very rare Na-Ca-Sr-Al fluoride calcjarlite from a new locality in Iquique, Chile. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Calcjarlite

calcjarlite

Formula
NaCa3Al3F16
Mineral

Calclacite

calclacite

Formula
Ca(CH3COO)Cl·5H2O
Mohs
1
Umohoite, Calcurmolite Locality: Rabejac, Lodève, Hérault, Languedoc-Roussillon, France (Locality at mindat.org) Size: 12.5 x 8.6 x 3.3 cm. A significant specimen from a major French find of some years back, generally considered to have produced the finest specimens of the species (I am told). Both species here are extremely rare and this is the first I have had of either one. This large plate features a very large deposit of umohoite in rich concentration on the top of the specimen. Hundreds of crystal clusters of Calcurmolite surround it. From the prominent radioactive mineral collection of Alain Caubel, of France. Mineral

Calcurmolite

calcurmolite

Formula
(Ca,Na)2(UO2)3Mo2(O,OH)11 * nH2O
Greenish grey crystal aggregates of the extremely rare mineral calcybeborosilite-(Y) from the type and only known locality worldwide: Dara-i-Pioz Glacier, Tien Shan Mountains, Region of Republican Subordination, Tajikistan. Mineral

Calcybeborosilite-(Y)

calcybeborosilite-(Y)

Formula
(Y,REE,Ca)(B,Be)2(SiO4)2(OH,O)2
Specimen showing calderite garnet crystals on matrix originating from Litzdalen, Sunndal Norway (width approx. 2 cm) Mineral

Calderite

calderite

Formula
(Mn²⁺,Ca)3(Fe³⁺,Al)2(SiO4)3
Mohs
7
Calderónite Locality: Las Colmenitas Mine, Santa Marta, Badajoz, Extremadura, Spain Picture width 2 mm. Collection and photograph Christian Rewitzer Mineral

Calderónite

calderónite
Caledonite, Diaboleite Locality: Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal County, Arizona, USA (Locality at mindat.org) Size: 5.0 x 4.2 x 2.6 cm. This is a superb specimen. It is solid caledonite, with sharp crystals poking out all over, and with minor deeper blue Diaboleite crystals on the backside. It is likely that this piece was mined prior to 1960. Ex. American Museum of Natural History and Larry Conklin Collections. Mineral

Caledonite

caledonite

Formula
Cu2Pb5(SO4)3(CO3)(OH)6
Two yellow small specimens of the very rare cerium-lanthanum carbonate mineral calkinsite-(Ce) from the TL in Montana (Rocky Boy Stock Occurrence, Hill County, Montana, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Calkinsite-(Ce)

calkinsite-(Ce)

Formula
(Ce,La)2(CO3)3 * 4H2O
Callaghanite Field of view: 0.5 mm Locality: Lichtloch 26, Hettstedt, Mansfeld-Südharz, Saxony-Anhalt, Germany Mineral

Callaghanite

callaghanite

Formula
Cu2Mg2(CO3)(OH)6 * 2H2O
Calomel Locality: Mariposa Mine (California Mountain Mine), Terlingua District, Brewster County, Texas, USA (Locality at mindat.org) Size: 3.0 x 2.5 x 1.0 cm. A rich, nearly solid mass of gemmy calomel crystals to 6mm with minor eglestonite and cinnabar, from this important and classic locale for the species. They turn opaque in sunlight as you normally see them, so lustrous crystals of this quality are most uncommon. Mineral

Calomel

calomel

Formula
HgCl
Calumetite from the Akmeek No. 2 Mine in Keweenaw County, Michigan. Held in the A. E. Seaman Mineral Museum. Mineral

Calumetite

calumetite

Formula
CaCu4(OH)8Cl2·3.5H2O
Metallic inclusions of the extremely rare germanium mineral calvertite in a matrix of chalcosine and germanite in a completely analyzed sample by SEM/EDS. From Polkowice-Sieroszowice Mine, Polkowice, Lower Silesian Voivodeship, Poland. Ex Vandenbroucke Museum collection from Waregem, Belgium. Size: 0.2 × 0.1 × 0.1 cm Mineral

Calvertite

calvertite

Formula
Cu5Ge0.5S4
Mineral

Calzirtite

calzirtite

Formula
Ca2Zr5Ti2O16
Mineral

Camanchacaite

camanchacaite

Formula
NaCaMg2[AsO4][AsO3(OH)]2
Mineral

Camaronesite

camaronesite

Formula
Fe³⁺2(PO3OH)2(SO4)(H2O)4·1-2H2O
Grey metallic single crystal of the extremely rare Cu-Ag telluride mineral cameronite from Good Hope Mine, Vulcan, Gunnison County, Colorado, United States of America. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Cameronite

cameronite

Formula
Cu5-ₓ (Cu,Ag)3+ₓTe10(with x=0.43)