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Mineral group · Silicate

Chlorite

(Mg,Fe,Al)₆(Si,Al)₄O₁₀(OH)₈

Green sheet silicates of metamorphic rocks — clinochlore, chamosite.

Hardness2–2.5
Crystal systemMonoclinic
ClassSilicate
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Chlorite specimen

Axinite, stilbite and chlorite from Striegau, Silesia, Poland — Photo: Kritzolina · CC BY-SA 4.0

Chlorite

A group of green phyllosilicate minerals ubiquitous in low-grade metamorphic and altered igneous rocks — named for their color, not the element chlorine.

Intro adapted from Wikipedia (CC BY-SA).

Chlorite is a mineral group, with the chemical formula (Mg,Fe,Al)₆(Si,Al)₄O₁₀(OH)₈.

It crystallizes in the monoclinic crystal system.

Key properties: Mohs hardness 2–2.5; typically green or white or gray.

Collections: Everyday Minerals.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet. Browse more C minerals or help write this entry.