Epidote

Overview

Ca2(Fe+3,Al)3(SiO4)3(OH)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.3-3.6 g/cc
Hardness - Mohs	Epidote - 7  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, gray, yellow, black
Streak	light gray

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	perfect
Tenacity	brittle
Fracture	regular
Luster	vitreous, glassy

Similar Minerals

Dana Number : 58.02.01a.02

Class: 58

Group: 58.02

Subgroup: 58.02.01a - epidote

Dana Number	Mineral Name	Formula
58.02.01a.01	clinozoisite	Ca2Al3(SiO4)3(OH)
58.02.01a.02	epidote	Ca2(Fe+3,Al)3(SiO4)3(OH)

Nickel-Strunz Number : 09.BG.05a

Group : 09

Subgroup : BG

Nickel-Strunz Number	Mineral Name	Formula
09.BG.05a	clinozoisite	Ca2Al3(SiO4)3(OH)
09.BG.05a	epidote	Ca2(Fe+3,Al)3(SiO4)3(OH)

Specimens

Localities

Uses