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Hemimorphite
Hemimorphite

Piemontite
Piemontite



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Hemimorphite
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Piemontite

Hemimorphite and Piemontite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

3.30-3.50-9999
1 7.18
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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven, Splintery

Cleavage

Perfect on {110}, poor on {101}, {001} rare
[001] good, [100] distinct

Mohs Hardness

56-6.5
2 10
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Chemical Composition

Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca2Al3(SiO4)(Si2O7)O(OH)

Hemimorphite and Piemontite Chemical Formula

While comparing Hemimorphite and Piemontite 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 Hemimorphite and Piemontite chemical formula.

  • Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)

Hemimorphite and Piemontite Specific Gravity

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