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Boulder Opal
Boulder Opal

Austinite
Austinite



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Boulder Opal
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Austinite

Boulder Opal and Austinite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.
 
Brittle
Easily soluble in cold dilute HCl
-
4.12
Uneven
Good in two directions parallel to the prism faces {110}
4-4.5
CaZn(AsO4)(OH)

Boulder Opal and Austinite Chemical Formula

While comparing Boulder Opal and Austinite 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 Boulder Opal and Austinite chemical formula.

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Boulder Opal and Austinite Specific Gravity

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