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Sellaite
Sellaite

Willemite
Willemite



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Sellaite
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Willemite

Sellaite and Willemite Physical Properties

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.
 
-
-
-
3.89-4.18
Conchoidal, Uneven
{0001}, {11 2 0} imperfect
5.5
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sellaite and Willemite Chemical Formula

While comparing Sellaite and Willemite 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 Willemite chemical formula.

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Sellaite and Willemite Specific Gravity

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