Encyclopedia

Ekanite: エカナイト (Ca,Fe 2+,Pb)2(Th,U)(Si8O20)
Discovered in 1961 by Anderson & Al.
Mineral with radioactivity and metamicte.
Locality of discovery: Ehiliyagoda (Ehaliyagoda), Ratnapura, Sabaragamuwa, Sri Lanka.

El Kachla NWA722
Reference to a meteorite.
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Emerald: エメラルド Be3Al2Si6O18
From the Greek "smaragdos" = green stone.
The green variety of the beryl group, whose color is due to the presence of chromium or vanadium. Green beryl not containing either of these elements is not entitled to be called an emerald, but should be referred to as simply « green beryl ».
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Enstatite: エンスタタイト
A variety of the pyroxene group.
Etymology: From the Greek "Enstates" = opponent, due to it’s refractive nature.
Discovered in 1855 by Kenngott in The Czech Republic (Berge Zdjar, Moravia).
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Eosphorite: Mn+2 Al(PO4) (OH)2 H2 O
Discovered by Brush and Dana in 1878.
Locality: Branchville, Fairfield, Connecticut, USA.
Etymology: from the Greek "Phos" = light and "Phoros" = regarding its color.
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Epidote: Ca2(Fe+3,Al)3(SiO4)3(OH)

Etymology: from the Greek "epidotos" = growing.
Locality: Bourg d’Oisans - Dauphiné - Alps - France.

Euclase: ユークレイス BeAlSiO4(OH) _ From the Greek "eu" = good et "klasis" = break, because of it’s perfect cleavage.
Discovered in 1792 by the famous French mineralogist Hauy.
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Eudialyte:Na4 (Ca,Ce)2 (Fe+2,Mn+2,Y) Zr Si8 O22 (OH,Cl)2
From the Greek "eu" = good et "dialytose" = decomposable , alluding to it’s easy solubility in acids.
Discovered in 1819 by Stromeyer.
Standard locality: Kanerdluarsuk, Ilimaussaq,Greenland.
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