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Faustite
Faustite

Sellaite
Sellaite



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Faustite
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Sellaite

Faustite and Sellaite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.9
Conchoidal
{???} Indistinct
4.5
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
-
-
3.14-3.16
Conchoidal
Perfect on {010} and {110}
5-5.5
MgF 2Ulrich Henn and Claudio C.

Faustite and Sellaite Chemical Formula

While comparing Faustite and Sellaite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Faustite and Sellaite chemical formula.

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Faustite and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite Vs Sellaite during the identification of gemstone. Specific gravity of Faustite is whereas that of Sellaite is .