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Piemontite
Piemontite

Simpsonite
Simpsonite



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Piemontite
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Simpsonite

Piemontite and Simpsonite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

-9999-9999
1 7.18
👆🏻

Fracture

Uneven, Splintery
Conchoidal

Cleavage

[001] good, [100] distinct
None

Mohs Hardness

6-6.57-7.5
2 10
👆🏻

Chemical Composition

Ca2Al3(SiO4)(Si2O7)O(OH)
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Piemontite and Simpsonite Chemical Formula

While comparing Piemontite and Simpsonite 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 Simpsonite chemical formula.

  • Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)
  • Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Piemontite and Simpsonite Specific Gravity

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