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Topazolite
Topazolite

Vesuvianite
Vesuvianite



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Topazolite
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Vesuvianite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.70-4.10
Conchoidal
Indistinct
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
-
-
-
3.32-3.43
Conchoidal
Poor on {110} and {100} very poor on {001}
6-7
Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4