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Thulite
Thulite

Pietersite
Pietersite



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Thulite
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Pietersite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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3.1
Uneven, Conchoidal
Perfect {010} imperfect {100}
6-7
Ca2Al3(SiO4)3(OH)
 
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-9999
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None
5
H2O+Fe2+,H3O2+Fe3+Si4O12