Epidote Crystals on Byssolite Matrix

Epidote Crystals on Byssolite Matrix
Magnificent Epidote Crystals on Byssolite Matrix
Photo Credit: Irocks/The Arkenstone 

Epidote is an abundant rock-forming mineral, but one of secondary origin. It occurs in marble and schistose rocks of metamorphic origin. It is also a product of hydrothermal alteration of various minerals (feldspars, micas, pyroxenes, amphiboles, garnets, and others) composing igneous rocks.

Epidote is a silicate mineral that is typically observed in domestically metamorphosed rocks of low-to-slight grade. In those rocks, epidote is often associated with amphiboles, feldspars, quartz, and chlorite. It occurs as replacements of mineral grains which have been altered by using metamorphism.
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Colour: Yellowish-green, green, brownish-green, black
Lustre: Vitreous, Pearly
Hardness: 6

Byssolite A variety of Amphibole Supergroup.

The specimen in the photo is From:  Alchuri, Shigar Valley, Skardu District, Baltistan, Northern Areas, Pakistan

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