Epidote

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This green mineral is called Epidote.
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Epidote is a green, yellow, or grey mineral, with streaks of grey. The name comes from the Greek words "epi" and "didonai", "to give"-"over", apparently in reference to one side being larger than the others in many crystals. The chemical name for epidote is "hydrous calcium iron aluminum silicate", which means that it is of the silicate family, contains molecules of calcium, iron, aluminum, and water. (Some silicates contain no water).

Facts about Epidote

chemical name:

hydrous calcium iron aluminum silicate

chemical formula:

Ca2(Al,Fe)Al2O(SiO4)(Si2O7)(OH)

color:

green, yellow, or grey mineral with streaks of grey

hardness:
on a scale of 1-8

6 - 7. It is hard, so it does not crack very well. Natural ways to crack, and break it apart, might include the pressure from ice.

specific gravity:
(density)
on a scale of 1-19

3.25 - 3.5

crystal:

monoclinic (typically elongated columns resembling tables or prisms)

fracture:

conchoidal

cleavage:

complete

environment:

Epidote is found in both metamorphic rocks, and in igneous rocks which contain iron and calcium. A common accessory mineral in the silicate rock family.

associated with:

Epidote is usually associated with the minerals hornblende, apatite, and quartz in silicate rocks, and actinolite, idocrase, and augite in metamorphic rocks.

locales:

Epidote is found around the world, in Austria, Bulgaria, France, Russia, Norway, USA: Texas, Michigan, California


Epidote

Click for full size Epidote is a green, yellow, or grey mineral, with streaks of grey. The name comes from the Greek words "epi" and "didonai", "to give"-"over", apparently in reference to one side being larger than the others in many crystals. Epidote is of the silicate family of minerals, and contains molecules of calcium, iron, aluminum, and water.

Facts about Epidote

color:

green, yellow, or grey mineral with streaks of grey

what it looks like:

crystals of epidote form prisms or tabular shapes

how it forms:

Epidote is found in igneous rocks and metamorphic rocks.

how it dissolves:

Epidote dissolves in acid. (This means that is naturally decomposes under the influence of rainwater).

where it can be found:

Epidote is found around the world, in Austria, Bulgaria, France, Russia, Norway, USA: Texas, Michigan, California

anything special about it?:

none.

other places where epidote is important:

none. It is a common accessory mineral, found in many rocks.


This green mineral is called Epidote.
Click on image for full size version (40K GIF)
Image from: theImage.com

Another picture of Epidote

Go to a listing of Rocks by mineral group


Epidote

Click for full size Epidote is a green, yellow, or grey mineral, with streaks of grey. The name comes from the the face that one side seems larger than the others in many crystals. Epidote is of the silicate family of minerals, and contains molecules of calcium, iron, aluminum, and water. Epidote is usually found in metamorphic rocks.
This green mineral is called Epidote.
Click on image for full size version (40K GIF)
Image from: theImage.com

Another picture of Epidote

Go to a listing of Rocks by mineral group



Last modified June 26, 2000 by the Windows Team

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