Clintonite
Chemical compound
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Clintonite is a calcium magnesium aluminium phyllosilicate mineral. It is a member of the margarite group of micas and the subgroup often referred to as the "brittle" micas. Clintonite has the chemical formula Ca
₃O
₁₀
₂. Wikipedia
Crystal system: Monoclinic
Cleavage: Perfect on
Color: Colorless, yellow, orange, red-brown, brown, green
Crystal class: Prismatic (2/m); or domatic (m)
Crystal habit: Tabular pseudohexagonal crystals; foliated or lamellar radiated; massive
Formula (repeating unit): Ca(Mg,Al); 3(Al; 3Si)O; 10(OH); 2
Optical properties: Biaxial (−)