(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6Monoclinic

Chlorite

(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6

Silicates
Chemical Formula(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6
Crystal SystemMonoclinic
Mohs Hardness2.5
Specific Gravity2.9
ColorGreen, blackish green
LusterVitreous to pearly
StreakGreenish white
CleavagePerfect basal
FractureFlexible

Occurrence

Found in low-grade metamorphic rocks. Green micaceous mineral.

Hardness on Mohs Scale

2.5 / 10
Talc (1)Quartz (7)Diamond (10)