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Minerals

6323 results

Silvery metallic crystal aggregates of the extremely rare Ag-Fe-Te sulphide mineral chenguodaite from the famous locality of Bisbee, Arizona in a sample that was completely analyzed by SEM/EDS. From Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, United States of America. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Chenguodaite

chenguodaite

Formula
Ag9FeTe2S4
Chenite Locality: Lautenthal smelter (slag locality), Lautenthal, Harz Mts, Lower Saxony, Germany Field of view 3 mm. Specimen and photo Leon Hupperichs. Mineral

Chenite

chenite

Formula
Pb4Cu(SO4)2(OH)6
Mineral

Chenmingite

chenmingite

Formula
FeCr2O4
Chenowethite blades on cotype specimen #76260 from the Blue Lizard mine. The field of view is 0.84 mm across. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Mineral

Chenowethite

chenowethite

Formula
Mg(H2O)6[(UO2)2(SO4)2(OH)2]·5H2O
Mineral

Chenzhangruite

chenzhangruite

Formula
MnFe²⁺Te⁴⁺4O10
These specimens show yellowish nodules included in a feldspar matrix. First SEM-EDS analysis have yielded a phosphate of Th and Ca, with minor Pb. XRD has shown patterns of "bravantite", the old name for cheralite and brockite. The chemical base formula for these species are: grayite (Th,Pb,Ca)(PO4)·H2O; cheralite CaTh(PO4)2; brockite (Ca,Th,Ce)(PO4)·H2O. REE has not been found in EDS. We could say that this yellow nodules belongs from altered monazite, formed by mixed species cheralite-grayite, with minor brockite. Accompanied in matrix by meta-autunite. From: Brabant Farm 168, Karibib, Erongo, Namibia. Size: 5.3 × 3.7 × 3 cm. Mineral

Cheralite

cheralite

Formula
CaTh(PO4)2
Mineral

Cheremnykhite

cheremnykhite

Formula
Pb3Zn3(VO4)2(TeO6)
Metallic inclusions of the extremely rare rhodium mineral cherepanovite (RhAs) associated to ferronickelplatinum in a matrix specimen from Koriak-Kamchatka (Koriak-Kamchatka Fold Zone, Kemerovo Oblast, Russian Federation). Ex Vandenbroucke Museum collection from Waregem, Belgium. Specimen analyzed by SEM/EDS. Mineral

Cherepanovite

cherepanovite

Formula
RhAs
Chernikovite, Rockelmann Quarry, Schwarzenberg, Schwarzenberg District, Erzgebirge, Germany Mineral

Chernikovite

chernikovite

Formula
(H3O)2(UO2)2(PO4)2 * 6H2O
Brown isolated crystal of the rare yttrium mineral chernovite-(Y) from the famous locality of Monte Cervandone (italian name) or Cherbadung (Swiss german name), Devero Alp, Baceno, Devero Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy. Mineral

Chernovite-(Y)

chernovite-(Y)

Formula
Y(AsO4)
Dark green platy single crystal of the very rare mica group-mineral chernykhite from the type locality in Kazakhstan (Balasauskandyk Vanadium Deposit, Shieli, Kyzylorda Region, Kazakhstan). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Chernykhite

chernykhite

Formula
(Ba,Na)(V³⁺,Al,Mg)2((Si,Al)4O10)(OH)2
Mineral

Cherokeeite

cherokeeite
Crystal structure of chervetite, Pb2V2O7, P21/a (No 14, P21/c with different cell setting). Data source: A. Kawahara, "La structure cristalline de la chervétite", Bulletin de la Société Française de Minéralogie et de Cristallographie, 90, 1967, 279-284. Mineral

Chervetite

chervetite

Formula
Pb2(V2O7)
White single crystal of the extremely rare mineral chesnokovite from the type and only known locality worldwide: Kedykverpakhk Mountain, Kola, Russian Federation. Mineral

Chesnokovite

chesnokovite

Formula
Na2SiO2(OH)2·8H2O
Mineral

Chessexite

chessexite

Formula
Na4Ca2Mg3Al8(SiO4)2(SO4)10(OH)10·40H2O
A single crystal of the extremely rare magnesium silicate mineral chesterite from the type locality in Chester (Carlton Quarry, Chester, Windsor County, Vermont, United States of America). Mineral

Chesterite

chesterite

Formula
Mg17Si20O54(OH)6
Grey green crystal aggregates of the rare Mg-Fe mineral chestermanite from the type and only locality worldwide in California (Potter Pass, Lakeshore, Fresno County, California, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Chestermanite

chestermanite

Formula
Mg2(Fe³⁺,Mg,Al,Sb⁵⁺)O2(BO3)
Chevkinite-(Ce) Locality: Midtmoen, Surka, Øståsen - Hadeland, Lunner, Oppland, Norway Field of view 6 mm. Depth of field is achieved with CombineZM. Specimen and photo Leon Hupperichs. Mineral

Chevkinite-(Ce)

chevkinite-(Ce)

Formula
(Ce,La,Ca,Th)4(Fe²⁺,Mg)(Fe²⁺,Ti,Fe³⁺)2(Ti,Fe³⁺)2(Si2O7)2O8
Chiappinoite-(Y) Field of view: 0.6 mm Locality: Pumice quarry, Ribeira Grande, São Miguel, Azores, Portugal (locality at mindat.org) Mineral

Chiappinoite-(Y)

chiappinoite-(Y)

Formula
Y2Mn(Si3O7)4
Orange brown crystals of the rare mineral chiavennite associated to tetragonal colorless natrolite crystals from Vevja Quarry, Tvedalen, Larvik, Vestfold, Norway. Mineral

Chiavennite

chiavennite

Formula
CaMn²⁺(BeOH)2Si5O13·(H2O)2
White crystals of the rare silica-hydrocarbon minerals chibaite (IMA 2008-067) and bosoite (IMA 2014-023) from the type and only known locality worldwide for both species: Arakawa, Minamiboso City, Chiba Prefecture, Honshu Island, Japan. Chibaite and bosoite can't be visually differentiated. Natural analogues of synthetic clathrate MTN with hydrocarbon molecules such as methane, ethane, propane, and 2-methyl-propane contained in its cage-like voids. Chibaite and bosoite are also described as a clathrasils. Ex Alfredo Petrov specimen. Mineral

Chibaite

chibaite

Formula
SiO2·n(CH4,C2H6,C3H8,C4H10) (nmax=3/17)
Mineral

Chihmingite

chihmingite

Formula
Ni²⁺Al2O4
Mineral

Chihuahuaite

chihuahuaite

Formula
FeAl12O19
Childrenite Locality: Poço d'Antas claim, Piauí Valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Size: small cabinet, 7.5 x 6.0 x 3.6 cm Childrenite (2 habits!) This matrix specimen has a lot going for it. There are a few super lustrous, almost metallic looking, botryoids, which are the terminal ends of many convergent childrenite crystals. In addition, there are free-standing childrenite crystals and at the very front of the specimen, therefore the best viewing angle, is this exquisite, rosette of bladed, lustrous, translucent, orangy-brown, childrenite crystals. The rosette measures 3.0 cm across. Outstanding! Mineral

Childrenite

childrenite

Formula
Fe²⁺AlPO4(OH)2·H2O
Mohs
5