General Information:
Chemical Formula:
Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH)
Composition:
(Molecular Weight = 454.36 gm)
Calcium 17.64 % Ca
Aluminum 17.82 % Al
Silicon 18.54 % Si
Hydrogen 0.22 % H
Oxygen 45.78 % O
Empirical Formula:
Ca2Al3(SiO4)3(OH)
Environment:
Metamorphic and contact metasomatic rocks.
Name Origin:
Named after its resemblance to zoisite and the monoclinic crystal form.
Physical Properties:
Cleavage:
[001] Perfect
Color:
colorless, green, gray, yellow green, or light yellow.
Density:
3.3 - 3.4, Average = 3.34
Diaphaniety:
Transparent to translucent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Granular - Common texture observed in granite and other igneous rock., Fibrous - Crystals made up of fibe rs.
Hardness:
7 - Quartz
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
grayish white
More details...