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Afghanite
Afghanite
☒

Alunite
Alunite
☒



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Afghanite
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Alunite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.65
Conchoidal
Perfect {10 1 0}
5.5-6
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Compare Blue Gemstones

Blue Gemstones

Kainite
Kainite
Lawsonite
Lawsonite
Plumbogummite
Plumbogummite
Alunite
Vishnevite
Alunite Vs Vishnevite
Alunite
Cavansite
Alunite Vs Cavansite
Alunite
Cordierite
Alunite Vs Cordierite

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