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Epidote (Silicate-Sorosilicate)


Hardness: 6.0 - 7.0
Specific Gravity: 3.4 - 3.5

Characteristics: Colors vary from black to yellowish green; vitreous to dull luster; often as coatings on other minerals; sometimes prismatic crystals; perfict cleavage in one direction; insoluble in most acids.

Found in hydrothermal veins in granitic plutons; amphibolites; basalts.

(Primary text: Perkins, D. 2002. Mineralogy. Prentice Hall.)


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