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Willemite
Willemite

Hemimorphite
Hemimorphite



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Willemite
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Willemite and Hemimorphite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.89-4.183.30-3.50
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

{0001}, {11 2 0} imperfect
Perfect on {110}, poor on {101}, {001} rare

Mohs Hardness

5.55
2 10
👆🏻

Chemical Composition

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

Willemite and Hemimorphite Chemical Formula

While comparing Willemite and Hemimorphite 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 Willemite and Hemimorphite chemical formula.

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

Willemite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.