Mineral Specimen Images (E)

Erythrite: Co3(AsO4)2·8(H2O)  
Cobaltkoritnigite: (Co,Zn)(AsO3OH)·(H2O)

Comments: Dark purplish cobaltkoritnigite with pink erythrite.
Location: Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Erythrite: Co3(AsO4)2·8(H2O)  
Skutterudite: (Co,Ni)As3-x

Comments: Erythrite crystal on massive skutterudite.
Location: Bou Azzer, Morocco. Scale: Crystal size 1.5 cm.
© John Veevaert

Erythrosiderite: K2Fe+++Cl5·(H2O)  
Salammoniac: NH4Cl

Comments: Orange-brown aggregates of erythrosiderite with sal ammoniac. Material from the 1926 eruption of the Erythrosiderite is hygroscopic and must be stored in a closed vial. The photo was made through the vial.
Location: Vesuvius, Naples Province, Campania, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Eskebornite: CuFeSe2  
Jolliffeite: (Ni,Co)AsSe

Comments: Back-scattered electron image of jolliffeite in sulfurian eskebornite. Note the cracked appearance and the different brightness of eskebornite, which is a reflection of variable ratio of selenium to sulfur. (CanMin v 42, p 844).
Location: Niederschlema-Alberoda uranium deposit, in the Erzgebirge region of Germany. Scale: See Image.
© Canadian Mineralogist

Eskimoite: Ag7Pb10Bi15S36

Comments: Gray metallic eskimoite in quartz.
Location: Manhattan, Nye County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Eskolaite: Cr2O3  
Chalcocite: Cu2S

Comments: Green crystalline eskolaite on massive chalcocite.
Location: Lubelin, Poland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Esperanzaite: NaCa2Al2(As+++++O4)2F4(OH)·2(H2O)

Comments: Pale blue-green botryoidal esperanzaite in rhyolite.
Location: Mina La Esperanza, Durango, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Esperite: PbCa3Zn4(SiO4)4  
Hardystonite: Ca2ZnSi2O7  
Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4

Comments: Pale brown porcelaneous esperite with pinkish gray hardystonite and black franklinite.
Location: Franklin, Sussex County, New Jersey. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Esseneite: CaFe+++AlSiO6

Comments: Orange-brown crystalline coating of esseneite on anorthite.
Location: Kopeisk, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ettringite: Ca6Al2(SO4)3(OH)12·26(H2O)

Comments: Small glassy whitish micro crystals of ettringite on a white powdery matrix.
Location: Ettringen, Eifel, Allemagne, Germany. Scale: 2.5 x 1 x 2 cm.
© John Veevaert

Ettringite: Ca6Al2(SO4)3(OH)12·26(H2O)

Comments: Doubly-terminated crystals of glassy yellow ettringite on matrix.
Location: N'Chwaning Mine, near Kuruman, South Africa. Scale: Crystal size 4 cm.
© Rob Lavinsky

Eucairite: CuAgSe

Comments: Black dendritic eucairite in white calcite crystal.
Location: Skrikerum Copper Mine, near Tyrsarum, Kalmar, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Eucairite: CuAgSe  
Schlemaite: (Cu,[ ])6(Pb,Bi)Se4  
Clausthalite: PbSe

Comments: Reflected-light digital-image of the intermixed schlemaite grain in type sample F2, from which the reflectance, crystallographic and crystal-structure data were obtained. (CanMin, v 41, p 1435).
Location: "Tiber" dike, -855-m level, block 5128, main shaft # 371, Niederschlema-Alberoda vein-type uranium depost at Hartensein, Erzgebirge, Germany. Scale: See Picture.
© Canadian Mineralogist

Eucairite: CuAgSe  
Crookesite: Cu7(Tl,Ag)Se4

Comments: Polished section (PPL) showing zoned crystal of cream-colored eucairite and pale lavender crookesite along with steel blue umangite and white clausthalite in dark gray gangue..
Location: Mine dump (tailings) of Shaft 371 near Hartenstein/Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Schlothauer

Euchlorine: KNaCu++3(SO4)3O

Comments: Olive green crusts of euchlorine on volcanic rock.
Location: Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Euchroite: Cu2(AsO4)(OH)·3(H2O)

Comments: Dark green, blocky crystals of euchroite on matrix.
Location: Missoula County, Montana, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Euchroite: Cu2(AsO4)(OH)·3(H2O)

Comments: Green, well developed, coarsely-crystalline euchroite on matrix.
Location: L'Ubietová (Libethen) Slovak Republic. Scale: 1.9 x 1.2 x 0.8 cm.
© Fabre Minerals

Euclase: BeAlSiO4(OH)

Comments: Euclase with sharp edges and great color. This specimen is from one of the famous and finest world finds of euclase, in the Colombian Emeralds area.
Location: Chivor, Columbia. Scale: 1.2 x 0.6 cm.
© Fabre Minerals

Eucryptite: LiAlSiO4

Comments: Gray massive eucryptite.
Location: Parker Mountain, Center Strafford, Strafford County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Eucryptite: LiAlSiO4

Comments: Fine grained, massive eucryptite. Fluorescent Red under SW.
Location: Midnight Owl mine, Yavapai Co., Arizona, USA. Scale: 6x4x4cm.
© Tom Loomis / Dakota Matrix