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Piemontite
Piemontite

Anorthite
Anorthite



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Piemontite
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Anorthite

Piemontite and Anorthite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
-9999
Uneven, Splintery
[001] good, [100] distinct
6-6.5
Ca2Al3(SiO4)(Si2O7)O(OH)
 
Brittle
-
-
2.77
Uneven
Perfect [001] good [010] poor [110]
6-6.5
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Piemontite and Anorthite Chemical Formula

While comparing Piemontite and Anorthite 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 Piemontite and Anorthite chemical formula.

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Piemontite and Anorthite Specific Gravity

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