Mineral Specimen Images (E)

Epidote: Ca2(Fe+++,Al)3(SiO4)3(OH) = Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH)

Comments: Dark green, blocky epidote with transparent quartz.
Location: Copper Mt., Prince of Wales, Alaska. Scale: 7 x 5 cm.
© Fabre Minerals

Epidote-(Pb): (Ca,Pb,Sr)2(Al,Fe+++)3(SiO4)(Si2O7)O(OH)  
Clinohedrite: CaZnSiO4·(H2O)

Comments: Clear crystals of clinohedrite on hancockite (epidote-(Pb)).
Location: Franklin, Sussex County, New Jersey, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Epidote-(Pb): (Ca,Pb,Sr)2(Al,Fe+++)3(SiO4)(Si2O7)O(OH)

Comments: Reddish brown prisms of hancockite on matrix.
Location: Franklin, Sussex County, New Jersey, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Epidote-(Pb): (Ca,Pb,Sr)2(Al,Fe+++)3(SiO4)(Si2O7)O(OH)  
Nasonite: Pb6Ca4Si6O21Cl2

Comments: Colorless, transparent hexagonal prism of nasonite on reddish brown hancockite (epidote-(Pb)).
Location: Franklin, Sussex County, New Jersey, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Epidote-(Sr): CaSrAl2Fe+++(Si2O7)(SiO4)O(OH)

Comments: B&W image of a radial aggregate of epidote-(Sr) in tinzenite. (Journal of Mineralogical and Petrological Sciences, v103:400.
Location: Nagakawara and Hohnomori deposits at the Ananai mine, Kochi Prefecture, Japan. Scale: See Image.
© Journal of Mineralogical and Petrological Sciences

Epistilbite: CaAl2Si6O16·5(H2O)  
Quartz: SiO2

Comments: White epistilbite cluster 25 mm across on amethyst quartz crystal matrix.
Location: Sawda, Jalgaon, Maharashtra, India. Scale: 10x8x5 cm.
© John Betts - Fine Minerals

Epistolite: (Na,[ ])2{(Na,Ti)4[Nb2(O,H2O)4Si4O14](OH,F)2}·2H2O

Comments: Plate-like crystals of pearly white epistolite to 2.7 cm.
Location: Ilimaussaq, Kvanefjeld, Greenland. Scale: 3.5 cm.
© John Veevaert

Epsomite: MgSO4·7(H2O)

Comments: Pure white compact fibrous mass of epsomite.
Location: Calatayud, Zaragoza, Aragon, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ercitite: Na2(H2O)4[Mn+++2(OH)2(PO4)2]

Comments: Back-scattered electron images of ercitite (medium gray) showing lath-shaped habit and cleavages and splintering on mechanical disturbance. W: whitlockite, F: fairfieldite, C: unidentified. (CanMin, v 38, p 896).
Location: Tanco pegmatite, southeastern Manitoba, Canada. Scale: Image size 150 µ-m.
© Canadian Mineralogist

Erdite: NaFeS2·2(H2O)

Comments: Red-brown columnar crystalline erdite in matrix.
Location: Coyote Peak, Humboldt County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ericaite: (Fe++,Mg,Mn)3B7O13Cl

Comments: Cubic crystal ericaite.
Location: Bischofferode, Nordhausen, Erfurt district, Harz Mts, Thuringia, Germany. Scale: Crystal size 3.7 mm.
© Thomas Witzke / Abraxas-Verlag

Ericssonite: BaMn++2Fe+++O[Si2O7](OH)  
Orthoericssonite: BaMn2(Fe+++O)Si2O7(OH)  
Tephroite: Mn2SiO4

Comments: Dark brown ericssonite, intergrown with orthoericssonite, with pink rhodonite, light brown diopside (var. schefferite) and gray tephroite.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Eriochalcite: CuCl2·2(H2O)

Comments: Green grains of eriochalcite from the eruption of 1875, Vesuvius volcano.
Location: Vesuvius volcano. Vesuvius, Naples, Naples province, Campania, Italy. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Erionite-Ca: (Ca,K2,Na2)2[Al4Si14O36]·15(H2O)

Comments: Radiating group of colorless acicular hexagonal prisms of erionite-Ca.
Location: Moeraki, Otago, South Island, New Zealand. Scale: See Image.
© Rruff Database

Erionite-K: (K2,Ca,Na2)2[Al4Si14O36]·15(H2O)

Comments: Randomly oriented colorless prismatic erionite-K crystals in a vug.
Location: Chase Creek, Falkland, British Columbia, Canada. Scale: See Image.
© Rruff Database

Erionite-Na: (Na2,K2,Ca)2[Al4Si14O36]·15(H2O)

Comments: White to pale green radiating erionite.
Location: Shurdo, Caucasus Mountains, Georgia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Erlichmanite: OsS2

Comments: Large gray fractured grain of erlichmanite. Polished section in reflected light.
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.25 mm.
© Thomas Witzke / Abraxas-Verlag

Ernienickelite: NiMn++++3O7·3(H2O)

Comments: Very small reddish-black tabular crystals of ernienickelite on quartz.
Location: Siberia complex, Western Australia, Australia. Scale: Picture size 0.7 mm.
© Thomas Witzke / Abraxas-Verlag

Ernstite: (Mn++1-xFe+++x)Al(PO4)(OH)2-xOx  
Schoonerite: Fe++2ZnMnFe+++(PO4)3(OH)2·9(H2O)

Comments: 1 mm honey brown, acicular, radial sprays of ernstite with light green fibrous schoonerite and apatite in siderite.
Location: White Cap mine, Pennington County., South Dakota. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Ershovite: Na4K3(Fe++,Mn++,Ti)2Si8O20(OH)4·5(H2O)

Comments: Olive green coatings of ershovite on green aegirine.
Location: Mount Koashva, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species