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Starlite
Starlite
☒

Plumbogummite
Plumbogummite
☒



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Starlite
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Plumbogummite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.91-4.73
Conchoidal
None
6.5-7.5
ZrSiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
Soluble
-
4.014
Uneven, Conchoidal
None
4-5
PbAl3(PO4)(SO4)(OH)6