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Boulder Opal
Boulder Opal

Calcite
Calcite



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Boulder Opal
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Calcite

Boulder Opal and Calcite 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
Soluble
-
2.67-2.73
Conchoidal
Perfect on [10 1 1] three directions with angle of 74° 55
3
CaCO 3Ulrich Henn and Claudio C.

Boulder Opal and Calcite Chemical Formula

While comparing Boulder Opal and Calcite 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 Calcite chemical formula.

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Boulder Opal and Calcite Specific Gravity

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