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Minerals

6323 results

Mineral

Cayalsite-(Y)

cayalsite-(Y)

Formula
CaY6Al2Si4O18F6
Caysichite-(Y), is not an aesthetic mineral but it has the particularity of being the only mineral from more than 5500 minerals known with the very rare chemical element erbium in its chemical composition. From: Evans Lou Mine, Lac Saint Pierre, Québec, Canada. Mineral

Caysichite-(Y)

caysichite-(Y)

Formula
Ca2Y2Si4O10(CO3)3 * 4H2O
Orange crystals of the extremely rare cerium mineral cebaite-(Ce) from the type locality in Bayan Obo (Bayan Obo Deposit, Baotou League, Inner Mongolia Autonomous Region, China), on a contrasting whitish matrix. Mineral

Cebaite-(Ce)

cebaite-(Ce)

Formula
Ba3Ce2(CO3)5F2
Mineral

Cebaite-(Nd)

cebaite-(Nd)
Tan crystal aggregates of the rare Ca-Al silicate mineral cebollite from the TL in Colorado (Gunnison County, Colorado, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Cebollite

cebollite

Formula
Ca5Al2(SiO4)3(OH)4
Mohs
5
Celadonite, Heulandite-Ca Locality: Jalgaon District, Maharashtra, India (Locality at mindat.org) Size: large cabinet, 16 x 14.5 x 7 cm Heulandite included by Celadonite A huge bowtie crystal of heulandite to 15 cm across forms the background for smaller crystals, all of which have been turned a deep green by included celadonite. The smaller crystals display a brighter luster although the big crystal does have matte finish luster. For size but also overall appearance, this is one of the best large examples I have seen of these are and now-classic stilbites. Mineral

Celadonite

celadonite

Mohs
2
Celestine crystals (field of view 3.5 × 2.6 cm). Found from Sakoany deposit, Katsepy, Mitsinjo District, Boeny region, Madagascar Mineral

Celestine

celestine

Formula
SrSO4
Mohs
3.25
elba island Mineral

Celleriite

celleriite

Mohs
7
Mineral: celsian feldspar Locality: Incline (Mariposa County), California Size: 5 x 4 x 3 cm Celsian, a rare barium feldspar. The celsian crystals in this sample are transparent and appear gray in the photo. The surrounding matrix is composed of sanbornite and quartz. Mineral

Celsian

celsian

Formula
BaAl2Si2O8
Blue crystals of centennialite (IMA 2013-110) associated to minoritary green calumetite both associated to perfect halite cubes. Rudna Mine, Lubin District, Lower Silesia, Poland. Mineral

Centennialite

centennialite

Formula
CaCu3Cl2(OH)6·nH2O (n~0.7)
Pale blue aggregates of the rare Ba-Al silicate mineral cerchiaraite-(Al) from the TL in Fresno Co. California (Esquire #1 Claim, Rush Creek, Fresno County, California, United States of America). Ex. Erich Laskowski collection (USA). Mineral

Cerchiaraite-(Al)

cerchiaraite-(Al)

Formula
Ba4Al4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
Yellow green crystals of the rare mineral cerchiaraite-(Fe) from the TL in Cerchiara mine, Italy. Ex. Erich Laskowski collection (USA). Mineral

Cerchiaraite-(Fe)

cerchiaraite-(Fe)

Formula
Ba4Fe³⁺4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
Cerchiaraite Locality: Cerchiara Mine, Borghetto Vara, Vara Valley, La Spezia Province, Liguria, Italy Green acicular xls of Cerchiaraite. Field of view 4 mm. Specimen and photo Leon Hupperichs. Mineral

Cerchiaraite-(Mn)

cerchiaraite-(Mn)

Formula
Ba4Mn³⁺4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
Long yellow orange microcrystals of the rare cerium mineral cerianite-(Ce) from the famous Eifel quarries (Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany). Associated minerals in the specimen are nepheline and calciobetafite. Ex Vandenbroucke Museum collection from Waregem, Belgium Mineral

Cerianite-(Ce)

cerianite-(Ce)

Formula
CeO2
Cerite-(Ce) (picture width: 0.9 x 0.8 mm) Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Mineral

Cerite-(Ceca)

cerite-(CeCa)

Formula
(Ce7Ca2)☐Mg(SiO4)3(SiO3OH)4(OH)3
Type-II cerromojonite associated with klockmannite, unnamed CuNi2Se4, clausthalite, and later-formed goethite in reflected light: (a) 1 polarizer, (b) partially crossed polarizers. Horizontal field of view is 200 µm. Abbreviations: ce = cerromojonite, kl = klockmannite, w = watkinsonite, cl = clausthalite, u = unnamed CuNi2Se4, g = goethite. From the article "Cerromojonite, CuPbBiSe3, from El Dragόn (Bolivia): A New Member of the Bournonite Group" distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Mineral

Cerromojonite

cerromojonite

Formula
CuPbBiSe3
Green schlossmacherite associated to blue ceruleite from the type locality (El Guanaco Mine, Guanaco, Santa Catalina, Antofagasta Region, Chile). Analyzed specimen. Mineral

Ceruleite

ceruleite

Formula
Cu2Al7(AsO4)4(OH)13 * 11.5H2O
Cerussite crystals (4.0 × 3.0 × 2.0 cm) from Nakhlak mine, Anarak, Isfahan, Iran Mineral

Cerussite

cerussite

Formula
PbCO3
Cervandonite is a classic and very sought after mineral from Binntal. This specimen has a wonderful black cervandonite rossette. The mineral has only been found in two very close localities in the Alps (Binntal and Cervandone, which are geologically analogous), so it is almost a one locality mineral. From: Wanni Glacier, Binn Valley, Wallis, Switzerland. Mineral

Cervandonite-(Ce)

cervandonite-(Ce)

Formula
(Ce,Nd,La)(Fe³⁺,Fe²⁺,Ti,Al)3O2(Si2O7)(As³⁺O3)(OH)
Cervantite Locality: Zlatá Baňa, Northern Slanské Mts, Prešov Region, Slovakia Field of view 3 mm. Specimen and photo Leon Hupperichs. Mineral

Cervantite

cervantite

Formula
Sb³⁺Sb⁵⁺O4
Mohs
4.5
(a) Se-bearing cervelleite (Se-crv) with a minute grains of Au-Ag alloy (el). Full article: https://www.cambridge.org/core/journals/mineralogical-magazine/article/enrichment-in-critical-metals-inge-and-tese-in-epithermal-deposits-of-the-la-carolina-district-san-luis-argentina/4DDF8BACF22CE81BC62482309D4C7B37 Mineral

Cervelleite

cervelleite

Formula
Ag4TeS
Outstanding colorless crystals of the very rare mineral Na-Ca sulphate mineral cesanite from the TL in Cesane (Cesano 1 Well, Cesano, Rome Province, Lazio, Italy). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Cesanite

cesanite

Formula
Na3Ca2(SO4)3(OH)
Emerald green crystal aggregates of the very rare tellurium mineral cesbronite from Tombstone (Tombstone District, Cochise County, Arizona, United States of America). Cesbronite has only been found in 3 localities worldwide. Mineral

Cesbronite

cesbronite

Formula
Cu3Te⁶⁺O4(OH)4
Mohs
3
Mineral

Cesiodymite

cesiodymite

Formula
CsKCu5O(SO4)5