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Minerals

6323 results

Mineral

Esperanzaite

esperanzaite

Formula
NaCa2Al2(AsO4)2(OH)F4·2H2O
Esperite illuminated with ultraviolet light. Photo taken at the Natural History Museum, London. Mineral

Esperite

esperite

Formula
PbCa2(ZnSiO4)3
Beige crystal aggregates of the very rare mineral esquireite (IMA 2014-066) from the third known locality worldwide, still not uploaded to Mindat: Gun Claim, MacMillan Pass, Yukon, Canada. Associated mineral is white sanbornite. Mineral

Esquireite

esquireite

Formula
BaSi6O13(H2O)7
Esseneite - France, Aveyron, Rodez, Lapanouse-de-Sévérac Slags - crystal 0,5 mm high Mineral

Esseneite

esseneite

Formula
CaFe³⁺AlSiO6
Mohs
6
Ettringite crystal, SEM micrograph, magnification ×12000 Mineral

Ettringite

ettringite

Formula
Ca6Al2(SO4)3(OH)12·26H2O
Black crystal aggregates of the very rare Ag-Cu selenide mineral eucairite from probably the type locality in Sweden (Skrikerum Mine, Valdemarsvik, Östergötland County, Sweden), eventhough the label states "Kalmas, Sweden". Ex Vandenbroucke Museum collection specimen, from Waregem, Belgium. Mineral

Eucairite

eucairite

Formula
AgCuSe
Mohs
2.5
Euchlorine Locality: Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy Size: 4.8cm x 2.6cm x 2.6cm (bottle) Euchlorine, a rare K-Na-Cu sulfate found in volcanoes, is very rare from the famed Italian Type Locality. The cork-stoppered circular flask holds numerous emerald-green crystallized fragments of this rarity from the Type Locality. Ex Jean Behier and Eric Asselborn Collections. Mineral

Euchlorine

euchlorine

Formula
KNaCu3(SO4)3O
Euchroite Locality: Svätodušná Valley, Ľubietová (Libetbánya; Libethen) ore belt, Western Slovenské Rudohorie Mts, Banská Bystrica Region, Slovakia (Locality at mindat.org) Size: 2.0 x 1.9 x 0.8 cm (largest). An excellent, 2-piece set of lustrous euchroite thumbnails from the Type Locality – Lubietova (Libethen), Slovakia. The larger thumb features lustrous, rich green crystals in parallel-growth while the smaller piece has much larger, very sharp, blocky crystals. These specimens show two distinctly different crystal habits of this rare copper arsenate. Classic, older material. Ex. Tarnowski Collection. Mineral

Euchroite

euchroite

Formula
Cu2AsO4(OH)·3H2O
A 4 cm crytal of Euclase from Equador, Rio Grande do Norte, Brazil Mineral

Euclase

euclase

Formula
BeAlSiO4(OH)
Mohs
7.5
Eucryptite Locality: Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield County, Connecticut, USA (Locality at mindat.org) Size: small cabinet, 9.3 x 7.0 x 2.8 cm Eucryptite From the TYPE LOCALITY 1880, this specimen has small grains of eucryptite embedded in the albite matrix. They are FLUORESCENT orange. According to MINDAT, named in 1880 by Brush and Dana from the Greek for "well concealed", in allusion to its occurrence embedded in albite. I have not seen a type locality piece for sale before Mineral

Eucryptite

eucryptite

Formula
LiAlSiO4
Mohs
6.5
Eudialyte Locality: Putelichorr, Khibiny Massif, Kola Peninsula, Russia Size: miniature, 3.8 x 3.6 x 3.3 cm Eudialyte From the world famous alkali intrusion at the Khibiny Massif on the Kola Peninsula, a eudialite crystal sits perched on its own massive matrix. It is 2 cm across, exhibiting magenta color and a matte luster. This relatively rare species is rare in such an equant crystal, well-exposed. Although not the biggest I have seen (they come bigger form Greenland), this IS one of the biggest and best from Russian and exhibits a morphology strikingly more sharp than most from Greenland as well. Mineral

Eudialyte

eudialyte

Formula
Na15Ca6(Fe²⁺,Mn²⁺)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2
A fairly typical eudidymite "fan" from a pegmatite. There are a few small dark green aegirine crystals in the lower right corner. - Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada - FOV 3.1 x 1.8 mm Mineral

Eudidymite

eudidymite

Formula
Na2Be2Si6O15·H2O
Mohs
6
Eugenite tangly with Luanheite - Privolnoye, Sakha Republic, Russia Mineral

Eugenite

eugenite

Formula
Ag11Hg2
White shiny crystals of the very rare mineral eugsterite in a matrix of glauberite from a locality in Kenya very close to the type locality: Kalacha, Turkana County, Kenya. Mineral

Eugsterite

eugsterite

Formula
Na4Ca(SO4)3·2H2O
Eulytine Locality: Schneeberg District, Erzgebirge, Saxony, Germany (Locality at mindat.org) Picture width 2.5 mm. Collection and photograph Christian Rewitzer Mineral

Eulytine

eulytine

Formula
Bi4(SiO4)3
Blue crystal agreggates of the very rare tellurite mineral eurekadumpite from the type locality, in a white contrasting matrix. From: Centennial Eureka Mine, Juab County, Utah, United States of America. Mineral

Eurekadumpite

eurekadumpite

Formula
(Cu,Zn)16(Te⁴⁺O3)2(AsO4)3Cl(OH)18·7H2O
Euxenite, crystals aggregation (11 cm) - Vegusdal, Norway Mineral

Euxenite-(Y)

euxenite-(Y)

Formula
(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Mineral

Evanichite

evanichite
Los ejemplares de evansita de Santa Creu d'Olorda son un clásico de la mineralogía catalana. En este ejemplar podemos observar una masa amorfa de este fosfato de aluminio de intenso color verde y brillo vítreo. Se dispone sobre una matriz de pizarra bituminosa-grafitosa. Localidad: Pedrera dels Ocells, Santa Creu d'Olorda, Barcelona, Catalunya, España. Medidas: 7.6 x 3.8 x 3.6 cm. Mineral

Evansite

evansite

Formula
Al3PO4(OH)6·6H2O
Mineral

Evdokimovite

evdokimovite

Formula
Tl4(VO)3(SO4)5(H2O)5
Eveite, Akrochordite Locality: Långban, Filipstad, Värmland, Sweden Dimensions: 1.5 cm x 1.0 cm x 1.0 cm Extremely rare, co-type material from the type locality at Langban. Bright green, vitreous, <0.5mm cluster of eveite hosted within a small vug. Accompanied by other eveite fragments and brown, subhedral akrochordite in a contrasting, pink, granular carbonate matrix. Includes old detailed A. F. Eadie and Topaz-Mineral Exploration labels. Ex. Rock Currier collection. Tom and Melissa Campbell photos. Mineral

Eveite

eveite

Formula
Mn²⁺2(AsO4)(OH)
Evenkite (Field of view is 8 mm) Locality: Slávik adit, Dubník, Červenica, Prešov Co., Prešov Region, Slovakia Original description: Aggregates of colourless evenkite in vugs of altered andesite. Evenkite was confirmed by PXRD (it is nearly impossible to prepare powder from this species :-D). Photo and collection: Martin Števko. Mineral

Evenkite

evenkite

Formula
C23H48
Mohs
1
Mineral

Eveslogite

eveslogite

Formula
(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe²⁺)12Si48O144(OH)12](F,OH,Cl)14
Mineral

Evseevite

evseevite