Epidote [ Ca2(Al2FeIII)[Si2O7][SiO4]O(OH) ]

Images of Epidote

Material properties

Formula Ca2(Al2FeIII)[Si2O7][SiO4]O(OH)
Abbreviation Ep
IMA Status Grandfathered (pre-IMA), 1801
Classifications Minerals containing SiO4, Epidote (group)
Member Allanite-Epidote
Reflectance lines M2OH, M[n]OH, OH
Spectra Luminescence (1), Reflectance (2)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Aluminosilicate, Mineral

Composition

Element Atoms
H 1
Al 2
Fe 1
Si 3
Ca 2
O 13
Total: 22

Specimens of Epidote

Name Owner Materials Phase purity Image Spectra Techniques
MES110 Epidote CSIRO Epidote (99.5%) 99.5 0 —
MT8330 Epidote CSIRO Clinochlore (var. Fe), Epidote (91.5%), Quartz, Titanite 91.5 0 —
MCU-EPI-1 Epidote CSIRO Albite, Clinochlore (var. Fe), Epidote (81.3%), Magnetite, Quartz 81.3 2 Reflectance
M1385 Epidote CSIRO Albite, Augite, Epidote (41.5%), Fluorapatite 41.5 0 —
MES082 Omphacite CSIRO Actinolite, Albite, Calcite, Epidote (12.0%), Ferro-glaucophane, Majorite, Omphacite, Quartz, Titanite 12.0 0 —
Tista 2020 D4 Shaker CSIRO Albite, Allanite-(Ce), Amphibole, Andesine, Apatite, Augite, Biotite, Bytownite, Chlorite (var. Mg, Fe), Epidote, Garnet, Grossular, Ilmenite, Ilmenite (var. Mn), K feldspar, Kyanite, Monazite-(Ce), Muscovite, Oligoclase, Pyroxene, Quartz, Staurolite, Titanite, Titanohematite, Xenotime-(Y), Zircon, Zoisite — 46 CL, EDS