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Willemite
Willemite

Charlesite
Charlesite



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Willemite
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Charlesite

Willemite and Charlesite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.89-4.181.79
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Irregular/uneven

Cleavage

{0001}, {11 2 0} imperfect
Perfect on {10bar10}

Mohs Hardness

5.52.5
2 10
👆🏻

Chemical Composition

Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Willemite and Charlesite Chemical Formula

While comparing Willemite and Charlesite 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 Charlesite chemical formula.

  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Willemite and Charlesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Charlesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Charlesite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 1.79 whereas that of Charlesite is 1.79.