Tags: Chemical Substance, Mineral.

Afwillite is a calcium hydroxide nesosilicate mineral with formula Ca3(SiO3OH)2·2H2O. It occurs as glassy colorless to white prismatic monoclinic crystals. Its Mohs scale hardness is between 3 and 4. It occurs as an alteration mineral in contact metamorphism of limestone.

Afwillite_2_on_rock_Hydrous_calcium_silicate_Crestmore_Quarry_Riverside_California_2068.jpg

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