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Minerals

6323 results

Donnayite-(Y), Ewaldite Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada FOV = 1.96 x 1.53 mm Collected 5/25/91. Associated minerals: calcite, pyrite, fluorite. 32 frames with Zerene Stacker DMap method. Mineral

Ewaldite

ewaldite

Formula
Ba(Na,Ca,Y,Ce,K)(CO3)2·2.6H2O
Mineral

Ewingite

ewingite

Formula
Mg8Ca8(UO2)24(CO3)30O4(OH)12(H2O)138
:White eylettersite (in the cavity), with brown to amber mundite and greenish threadgoldite; bought from prof. van Wambeke who discovered the mineral and named it after his wife, Lea Eyletters. Collection and photo Erik Vercammen. Locality: Kobokobo pegmatite, Mwenga, Sud-Kivu, Democratic Republic of the Congo SIze: 11mm x 5mm x 6mm Mineral

Eylettersite

eylettersite

Formula
Th0.75Al3(PO4)2(OH)6
Mineral

Eyselite

eyselite

Formula
Fe³⁺Ge4+3O7(OH)
Single crystal of the rare borate mineral ezcurrite from the type locality: Tincalayu Mine, Salar Del Hombre Muerto, Salta, Argentina. Mineral

Ezcurrite

ezcurrite

Formula
Na2B5O7(OH)3·2H2O
Mineral

Ezochiite

ezochiite

Formula
Cu¹⁺(Rh³⁺Pt⁴⁺)S4
Extremely rare tellurium mineral from Moctezuma (Bambolla Mine, Moctezuma, Sonora, Mexico), as red wine crystals on a contrasting matrix. Eztlite has only been found in two localities worldwide! EDS analysed. Mineral

Eztlite

eztlite

Formula
Pb²⁺2Fe³⁺3(Te4+ O3)3(SO4)O2Cl
Mineral

Fabianite

fabianite

Formula
CaB3O5OH
Mineral

Fabritzite

fabritzite

Formula
Zn9(SO4)2(OH)12Cl2·6H2O
White crystals of the very rare mineral fabriesite associated to trinepheline and jadeite from Myanmar (Tawmaw, Hpakant Township, Mohnyin District, Kachin State, Myanmar). Ex. Erich Laskowski collection (USA). Mineral

Fabrièsite

fabrièsite

Formula
Na3Al3Si3O12·2H2O
Mineral

Faheyite

faheyite

Formula
Be2Mn²⁺Fe³⁺2(PO4)4·6H2O
A very small green crystal of fahleite (a Zn-Ca-Fe arsenate), an extremely rare Tsumeb mineral only known from this locality worldwide, which is of course the type locality (Tsumeb Mine, Otavi Highlands, Namibia). The species was labeled as RRR! in Gebhard Tsumeb II book. Mineral

Fahleite

fahleite

Formula
CaZn5Fe³⁺2(AsO4)6·14H2O
Outstanding white adamantine vitreous crystals of the extremely rare tellurium mineral fairbankite from the type locality in Tombstone (Grand Central Mine, Tombstone Hills, Cochise County, Arizona, United States of America) and only one of the two known localities worldwide, associated to a greenish Te mineral, probably emmonsite. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Fairbankite

fairbankite

Formula
Pb(TeO3)
A lot of white single crystals of the very rare minerals fairchildite and bütschliite from a locality in Ontario: Desoronto, Richmond Township, Lennox & Addington County, Ontario, Canada. Fairchildite and Bütschliite are two very rare K-Ca carbonates. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Fairchildite

fairchildite

Formula
K2Ca(CO3)2
Mohs
2.5
Fairfieldite Locality: Foote Lithium County Mine (Foote Mine), Kings Mountain District, Cleveland County, North Carolina, USA (Locality at mindat.org) Classic old material ! To find a Fairfieldite up to 1 cm is truly rare, but give it good definition, luster, and color as the largest crystal has here and you have a truly significant specimen. 2.9 x 2.5 x 1.5 cm Mineral

Fairfieldite

fairfieldite

Formula
Ca2Mn²⁺(PO4)2·2H2O
Mohs
3.5
Mineral

Faizievite

faizievite

Formula
Li6K2Na(Ca6Na)Ti4(Si6O18)2(Si12O30)F2
Falcondoite Locality: Loma Peguera, Bonao, Monseñor Nouel Province, Dominican Republic (Locality at mindat.org) Size: small cabinet, 7.0 x 3.8 x 0.8 cm Falcondoite and Willamseite This attractive specimen is primarily composed of a solid mass of the rare mineral Falcondoite , a nickel-rich species. A subtle, microcrystalline druse of darker olive-colored material mixed in, is the Willamseite. Rarely seen material! (TYPE LOCALITY) Mineral

Falcondoite

falcondoite

Formula
Ni4Si6O15(OH)2·6H2O
Mineral

Falgarite

falgarite

Formula
K4(VO)3(SO4)5
Falkmanite Locality: Bayerland Mine, Pfaffenreuth, Waldsassen, Oberpfälzer Wald, Upper Palatinate, Bavaria, Germany (Locality at mindat.org) Size: 8.5 x 3.4 x 2.5 cm. Mineral

Falkmanite

falkmanite

Formula
Pb3Sb2S6
Mohs
2.5
Mineral

Falottaite

falottaite

Formula
MnC2O4·3H2O
Mineral

Falsterite

falsterite

Formula
Ca2MgMn²⁺2Fe²⁺2Fe³⁺2Zn4(PO4)8(OH)4(H2O)14
Mohs
2
Colour
blue-green
Famatinite, Pyrite Locality: Pen-Shan Ore Body, Chinkuahshih Mine, Jui-Fang Town, Taipei County, Taiwan Province, Taiwan (Locality at mindat.org) Size: 5.3 x 5.0 x 3.7 cm Famatinite is a rare copper-antimony sulfide found in low to moderate temperature copper deposits. This is an exceptional and rich specimen from this uncommon locale of knobby aggregates of sharp, metallic-gray crystals covering the crystallized pyrite matrix. Famatinite is found on both sides of this extremely rich and very rarely available combination example of the species and locale. Ex. Larry Krause specimen Mineral

Famatinite

famatinite

Formula
Cu3SbS4
Mohs
3.5
Mineral

Fanfaniite

fanfaniite

Formula
Ca4MnAl4(PO4)6(OH)4·12H2O
Tiny, prismatic, lustrous, red fangite crystals on dolomite. Field of view: 0.75 mm. Photo: Mischa Crumbach. From Lengenbach quarry. Mineral

Fangite

fangite

Formula
Tl3AsS4