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Mottramite
Mottramite
☒

Chrome Tourmaline
Chrome Tourmaline
☒



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Mottramite
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Chrome Tourmaline
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
5.9
Sub-Conchoidal
None observed
3
PbCu(VO4)(OH)
 
-
-
-
2.85-3.35
Conchoidal
3,2
7-7.5
Tourmaline is a series of several different minerals with unique chemical formulas.

Compare Brown Gemstones

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