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Amethyst
Amethyst
☒

Nickeline
Nickeline
☒



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Amethyst
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Nickeline
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2
 
Brittle
-
-
-9999
Conchoidal, Uneven
{1010} Imperfect, {0001} Imperfect
5-5.5
NiAs

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