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Willemite
Willemite

Aragonite
Aragonite



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Willemite
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Aragonite

Willemite and Aragonite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Dilute acid

Durability

-
-

Specific Gravity

3.89-4.182.93-2.96
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Subconchoidal, Conchoidal

Cleavage

{0001}, {11 2 0} imperfect
Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

5.53.5-4
2 10
👆🏻

Chemical Composition

Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Willemite and Aragonite Chemical Formula

While comparing Willemite and Aragonite 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 Aragonite chemical formula.

  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Willemite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.