Name:

epidote

A photo of the mineral epidote

Class:

Silicates

Chemistry:

Ca2(Al,Fe)Al2O(SiO4)(Si2O7)(OH) hydrous calcium iron aluminum silicate

Color(s):

green, yellow, gray, Streak: gray

Hardness:

6 - 7

SpecGrav:

3.25 - 3.5

Fracture:

conchoidal

Cleavage:

complete

Crystal:

monoclinic (typically elongated columns)

Envronment:

metamorphics, pegmatites, in felsec igneous rocks containing calcium

Association:

actinolite, idocrase, augite, hornblende, apatite, quartz

Locals:

| Austria | Bulgaria | France | USSR | Norway | Texas, Michigan, California/USA |

Misc:

The name from the Greek words "epi" and "didonai", "to give"-"over", apparently in reference to one side being larger than the others in many crystals.

Photos
& Locals:

1.) Border of Turkey & Bulgaria, Bulgaria

2.) Border of Turkey & Bulgaria, Bulgaria

TheImage Home
Minerals by Name
Minerals by Class
Gemstones

Photo Information
Crystal Info
Bibliography