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Londonite
Londonite
☒

Polyhalite
Polyhalite
☒



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Londonite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.34
Conchoidal
None
-9999
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Compare White Gemstones

White Gemstones

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Schultenite
Sellaite
Sellaite
Sussexite
Sussexite
Polyhalite
Milk Opal
Polyhalite Vs Milk Opal
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Polyhalite Vs Montebrasite
Polyhalite
Natrolite
Polyhalite Vs Natrolite

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