Thomsonite | |
Chemical Formula |
NaCa2Al5Si5O20·6H2O |
Species |
Silicates |
Crystal System |
Orthorhombic |
Mohs Scale |
5-5.5 |
Specific Gravity |
2.23-2.29 |
Color |
colorless, white, beige |
Streak |
white |
Luster |
vitreous, pearly |
Diaphaneity |
transparent to translucent |
Cleavage |
perfect on ; good on |