Origin Of Name
From the Greek word sants (tablet) and idioms (appearance), referring to this mineral's typical habit
Physical Properties:
. Hardness- 6
. Specific Gravity- 2.56
. Clevage- Perfect (001)
. Fracture- Good (010)
. Luster- Vitreous
. Transparency- Transparent to translucent
. Colour- White, variable
. Streak- White
Crystal System- Monoclinc
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