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Spinel
Spinel

Legrandite
Legrandite



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Spinel
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Legrandite

Spinel and Legrandite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4
 
Brittle
-
-
3.98-4.04
Conchoidal
Imperfect, poor one {100}
4.5-5
Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Spinel and Legrandite Chemical Formula

While comparing Spinel and Legrandite 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 Spinel and Legrandite chemical formula.

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Spinel and Legrandite Specific Gravity

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