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Alunite
Alunite
☒

Norbergite
Norbergite
☒



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Alunite
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Norbergite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6
 
-
-
-
3.177
Uneven, Conchoidal
{???} Distinct
6-6.5
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Compare Red Gemstones

Red Gemstones

Polyhalite
Polyhalite
Vanadinite
Vanadinite
Jacinth
Jacinth
Norbergite
Bornite
Norbergite Vs Bornite
Norbergite
Carnallite
Norbergite Vs Carnallite
Norbergite
Piemontite
Norbergite Vs Piemontite

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