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Piemontite
Piemontite

Oligoclase
Oligoclase



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Piemontite
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Oligoclase

Piemontite and Oligoclase 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)
 
-
-
-
2.62-2.67
Uneven
From the Greek, oligos and kasein, little cleavage.
6-6.5
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Piemontite and Oligoclase Chemical Formula

While comparing Piemontite and Oligoclase 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 Oligoclase chemical formula.

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Piemontite and Oligoclase Specific Gravity

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