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Rock guide

Chlorite

mineral · common

Quick facts

Formula
(Mg,Fe)5Al(Si3Al)O10(OH)8
Hardness
2-2.5
Luster
Vitreous, pearly
Colors
Green, yellow, white

Chlorite is a common mineral found in metamorphic rocks, often associated with green schists.

Identify by its green color, perfect cleavage, and pearly luster.

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