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Blue spinel
Blue spinel

Thaumasite
Thaumasite



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Blue spinel
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Thaumasite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
-9999
MgAl2O4
 
Brittle
-
-
1.91
Subconchoidal, Conchoidal
Indistinct
3.5
Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.