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Ettringite and Arfvedsonite Physical Properties


Arfvedsonite and Ettringite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Partially soluble in water   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.77   
3.3-3.5   

Fracture
Not Available   
Uneven, Brittle, Metallic, Brittle, Metallic   

Cleavage
Perfect on {10 1 0}   
Perfect on [110]   

Mohs Hardness
2-2.5   
5-6   

Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)   
NaNa2(Fe++4Fe+++)Si8O22(OH)2   

Optical Properties >>
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Ettringite and Arfvedsonite Chemical Formula

While comparing Ettringite and Arfvedsonite 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 Ettringite and Arfvedsonite chemical formula.

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Ettringite and Arfvedsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Arfvedsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Arfvedsonite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.3-3.5 whereas that of Arfvedsonite is 3.3-3.5.

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