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Alunite
Alunite
☒

Uvite
Uvite
☒



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Alunite
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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
 
-
-
-
2.97-3.14
Uneven, Conchoidal
{1011} Indistinct
-9999
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Red Gemstones

Polyhalite
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Vanadinite
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Jacinth
Jacinth
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Piemontite
Uvite Vs Piemontite

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