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Piemontite
Piemontite

Pollucite
Pollucite



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Piemontite
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Pollucite

Piemontite and Pollucite 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
Readily soluble in HF
-
2.86-2.94
Conchoidal, Uneven
None observed
6.5-7
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Piemontite and Pollucite Chemical Formula

While comparing Piemontite and Pollucite 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 Pollucite chemical formula.

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Piemontite and Pollucite Specific Gravity

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