Thomsonite is a mineral of the zeolite group. It usually occurs in effusive rocks in tonsils.
You can see thomsonite stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | tectosilicate |
Formula (repeating unit) |
NaCa2Al5Si5O20·6H2O |
IMA symbol | Thm |
Strunz classification | 9.GA.10 |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Identification | |
Color | colorless, white, beige, and pink |
Cleavage | perfect on {010}; good on {100} |
Mohs scale hardness | 5-5+1⁄2 |
Luster | vitreous, pearly |
Streak | white |
Diaphaneity | transparent to translucent |
Specific gravity | 2.23 - 2.29 |