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Thaumasite
Thaumasite

Opal
Opal



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Thaumasite
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Opal

Thaumasite and Opal Physical Properties

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Physical Properties

Tenacity

Brittle
BrittleWalter Schumann

Solubility

-
hot salt water

Durability

-
-

Specific Gravity

1.911.98-2.25
1 7.18
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Fracture

Subconchoidal, Conchoidal
Conchoidal

Cleavage

Indistinct
None

Mohs Hardness

3.55-6.5
2 10
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Chemical Composition

Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.
SiO2 · nH2O

Thaumasite and Opal Chemical Formula

While comparing Thaumasite 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 Thaumasite and Opal chemical formula.

  • Chemical formula of Thaumasite- Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.
  • Chemical formula of Opal- SiO2 · nH2O

Thaumasite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thaumasite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thaumasite and Opal Optical Properties during the identification of gemstone. Specific gravity of Thaumasite is 1.98-2.25 whereas that of Opal is 1.98-2.25.