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Adamite
Adamite

Andean Opal
Andean Opal



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Adamite
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Andean Opal

Adamite and Andean Opal Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

4.32-4.48-9999
1 7.18
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Fracture

Uneven, Subconchoidal, Conchoidal
-

Cleavage

{101}, good; {010}, poor
None

Mohs Hardness

3.5-9999
2 10
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Chemical Composition

Zn 2(AsO 4)(OH)Michael O’Donoghue , Gems, Sixth edition (2006)
SiO2·nH2O

Adamite and Andean Opal Chemical Formula

While comparing Adamite and Andean Opal 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 Adamite and Andean Opal chemical formula.

  • Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael O’Donoghue , Gems, Sixth edition (2006)
  • Chemical formula of Andean Opal- SiO2·nH2O

Adamite and Andean Opal Specific Gravity

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