Material Index
| Name | Formula | Classifications | Members | Image | Lines | Spectra | Techniques | Tags |
|---|---|---|---|---|---|---|---|---|
| Emerald | Be3Al2Si6O18 | Beryl | — | 2 | 0 | — | Aluminosilicate , Variety | |
| Enstatite | Mg2Si2O6 | Orthopyroxene | — | 3 | 0 | — | Mineral, Silicate | |
| Epididymite | Na2Be2Si6O15·H2O | — | — | 3 | 0 | — | Hydrated , Mineral, Silicate | |
| Epidote | Ca2(Al2FeIII)[Si2O7][SiO4]O(OH) | Epidote (group) | Allanite-Epidote | 2 | 5 | CL, EDS, Reflectance | Mineral, Aluminosilicate | |
| Epidote (group) | — | Epidote (supergroup) | Piemontite-(Sr), Clinozoisite-Epidote (series), Piemontite, Zoisite, Epidote, Piemontite-(Pb), Mukhinite, Clinozoisite, Tweddillite, Hancockite, Epidote-(Sr), Niigataite | 0 | 0 | — | Group | |
| Epidote (supergroup) | — | — | Epidote (group), Allanite (group), Zoisite-(Pb) | 0 | 0 | — | Supergroup | |
| Epidote-(Sr) | CaSr(Al2FeIII)[Si2O7][SiO4]O(OH) | Epidote (group) | — | 0 | 0 | — | Mineral, Aluminosilicate , Hydroxide | |
| Epistolite | (Na☐)Nb2Na3Ti(Si2O7)2O2(OH)2(H2O)4 | — | — | 1 | 0 | — | Mineral, Silicate , Hydroxide , Hydrated | |
| Epoxy | C21H25ClO5 | — | — | 1 | 1 | CL | Synthetic, Compound , Organic | |
| Erbium | Er | — | — | 12 | 0 | — | Element , Metal | |
| Erbium orthophosphate | ErPO4 | REE phosphate | — | 0 | 0 | — | Compound, Orthophosphate , Phosphate | |
| Erbium ultraphosphate | ErP5O14 | REE ultraphosphate | — | 15 | 2 | CL/SEM, SXES | Synthetic , Compound, Phosphate , Ultraphosphate | |
| Ericaite | FeII3B7O13Cl | Boracite (group) | — | 0 | 0 | — | Mineral, Borate | |
| Eringaite | Ca3Sc2(SiO4)3 | Garnet | — | 0 | 0 | — | Mineral, Silicate | |
| Erlichmanite | OsS2 | Pyrite (group) | — | 0 | 0 | — | Mineral, Sulphide |
