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Sellaite
Sellaite

Faustite
Faustite



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Sellaite
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Faustite

Sellaite and Faustite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

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

Sellaite and Faustite Chemical Formula

While comparing Sellaite and Faustite 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 Sellaite and Faustite chemical formula.

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Sellaite and Faustite Specific Gravity

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