Eastonite
KAlMg2 (Si2 Al2 )O10 (OH)2
Biotite
—
Open
Flaky green eastonite, from C.K. Williams & Co. Quarry, Easton, Northampton County, PA, USA
©
Photo by John Krygier (via Wikimedia Commons), Public Domain
0
0
—
Mineral, Aluminosilicate , Hydroxide
Edenite
NaCa2 Mg5 (Si7 Al)O22 (OH)2
Edenite root name group
—
Open
Edenite specimen from Bancroft, Hastings County, Ontario, Canada
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
9
0
—
Mineral, Hydroxide , Silicate
Edenite root name group
A Ca2 Z 5 (AlSi7 O22 )(OH,F,Cl)2 , A =Na,K, Z =Mg,FeII
Calcium amphibole
Ferro-fluoro-edenite , Edenite , Fluoro-edenite , Ferro-edenite
0
0
—
Group , Silicate
Edgrewite
Ca9 (SiO4 )4 F2
Chegemite (subgroup)
—
0
0
—
Mineral, Silicate , Halide
Edingtonite
Ba(Si3 Al2 )O10 ·4H2 O
Zeolite (group)
—
0
0
—
Hydrated , Mineral, Aluminosilicate
Eifelite
KNa2 (MgNa)(Mg3 Si12 )O30
Osumilite (group)
—
0
0
—
Mineral, Silicate
Elbaite
Na(Al1.5 Li1.5 )Al6 (Si6 O18 )(BO3 )3 (OH)3 (OH)
Tourmaline
—
Open
Elbaite specimen at the Yale Peabody Museum of Natural History
©
Photo by Dicklyon, CC BY-SA 4.0
2
0
—
Mineral, Aluminosilicate , Borate , Hydroxide
Elpidite
Na2 ZrSi6 O15 ·3H2 O
—
—
Open
Elpidite with pyrite from Mont-Saint-Hilaire, Quebec, Canada
©
Photo by Chip Clark, via Smithsonian National Museum of Natural History
3
0
—
Mineral, Silicate , Hydrated
Elsmoreite (group)
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Pyrochlore (supergroup)
Hydrokenoelsmoreite , Hydroxykenoelsmoreite , Hydroplumboelsmoreite
0
0
—
Group
Embolite
Ag(Br,Cl)
Embolite (series)
—
Open
Chlorargyrite from Silver King Mine, Trojan District, Providence Mts, San Bernardino County, California, USA
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
2
0
—
Variety, Halide
Embolite (series)
—
—
Chlorargyrite , Embolite
0
0
—
Series
Emerald
Be3 Al2 Si6 O18
Beryl
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Open
Crystals of emerald (variety of beryl)
©
Photo by Аружан Жамбулатова (via Wikimedia Commons), CC-BY-SA 3.0
2
0
—
Aluminosilicate , Variety
Enstatite
Mg2 Si2 O6
Orthopyroxene
—
Open
Enstatite specimen from Tanzania
©
Photo by Greg Polley, via Smithsonian National Museum of Natural History
3
0
—
Mineral, Silicate
Epididymite
Na2 Be2 Si6 O15 ·H2 O
—
—
3
0
—
Hydrated , Mineral, Silicate
Epidote
Ca2 (Al2 FeIII )[Si2 O7 ][SiO4 ]O(OH)
Epidote (group)
Allanite-Epidote
Open
Epidote crystals from Katsna Yama, Middle Urals, Russia. Field of view: 4.4mm
©
Photo by Masha Milshina (via Wikimedia Commons), CC-BY 4.0
2
5
CL, EDS, Reflectance
Mineral, Aluminosilicate