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Annabergite
Annabergite

Opal
Opal



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Annabergite
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Opal

Annabergite and Opal Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Sectile
-
-
3.07
-
Perfect on {010}, indistinct on {100} and {102}
2
Ni3(AsO4)2•8(H2O)
 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O

Annabergite and Opal Chemical Formula

While comparing Annabergite and 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 Annabergite and Opal chemical formula.

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Annabergite and Opal Specific Gravity

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