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Shigaite
Shigaite

Ettringite
Ettringite



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Shigaite
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Ettringite

Shigaite and Ettringite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Moderately flexible
-
-
2.32
-
Perfect on {0001}
2
Pb6Cu3BiS4
 
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Partially soluble in water
-
1.77
-
Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Shigaite and Ettringite Chemical Formula

While comparing Shigaite and Ettringite 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 Shigaite and Ettringite chemical formula.

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Shigaite and Ettringite Specific Gravity

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