's Image Gallery

Englishite: K3Na2Ca10Al15(PO4)21(OH)7·26(H2O)

Comments: Bluish colliform englishite crystals.
Location: Clay Canyon, Fairfield, Utah County, Utah. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Englishite: K3Na2Ca10Al15(PO4)21(OH)7·26(H2O)  
Roscherite: Ca(Mn++,Fe++)5Be4(PO4)6(OH)4·6(H2O)

Comments: Black crystalline aggregate of roscherite on white englishite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Englishite: K3Na2Ca10Al15(PO4)21(OH)7·26(H2O)  
Tiptopite: K2(Na,Ca)2Li3Be6(PO4)6(OH)2·(H2O)  
Montgomeryite: Ca4MgAl4(PO4)6(OH)4·12(H2O)

Comments: Red montgomeryite lath-like crystals to 1mm in 2mm rosettes associated with clear, acicular sprays of tiptopite to 0.75mm and white cottonball-like crystals of englishite to 0.2mm.
Location: Tip Top mine, Custer Co., South Dakota, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Enstatite: Mg2Si2O6

Comments: Single, terminated, brown, transparent to translucent enstatite crystal.
Location: Mpwa-Mpwa, Tanzania. Scale: 17x17x27 mm.
© Dan Weinrich

Eosphorite: MnAl(PO4)(OH)2·(H2O)  
Zanazziite: Ca2(Mg,Fe++)(Mg,Fe++,Al,Mn,Fe+++)4Be4(PO4)6(OH)4·6(H2O)

Comments: Minor crystals of equant, olive green zanazziite and brown, lath-like crystals of eosphorite on quartz.
Location: Taquaral, Minas Gerais, Brazil. Scale: Picture size 1 cm.
© John Veevaert

Eosphorite: MnAl(PO4)(OH)2·(H2O)  
Vivianite: Fe++3(PO4)2·8(H2O)

Comments: Bottle-green translucent vivianite crystal (2cm) associated with reddish, micro eosphorite crystals.
Location: Lavra do Énio pegmatite, Galiléia, Governador Valadares, Rio Doce, Minas Gerais, Brazil. Scale: 3.5 x 3 x 2 cm..
© Tom Loomis / Dakota Matrix

Ephesite: NaLiAl2(Al2Si2)O10(OH)2  
Hausmannite: Mn++Mn+++2O4

Comments: Flesh-colored ephesite associated with dark brownish black hausmannite.
Location: Gloucester mine. Postmasburg, Cape province. S. Africa. Scale: 5.5 x 5 cm.
© Fabre Minerals

Epididymite: NaBeSi3O7(OH)

Comments: Trilling twinned crystal of epididymite on matrix.
Location: Mont St. Hilaire, Quebec, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Epididymite: NaBeSi3O7(OH)  
Eudidymite: NaBeSi3O7(OH)

Comments: Translucent prismatic crystals of eudidymite on white opaque epididymite.
Location: Narsaarsuk, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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