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Thaumasite
Thaumasite

Polyhalite
Polyhalite



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Thaumasite
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Polyhalite

Thaumasite and Polyhalite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

1.912.78
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
Conchoidal

Cleavage

Indistinct
Perfect on {10 1 }; parting on {010}

Mohs Hardness

3.53.5
2 10
👆🏻

Chemical Composition

Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.
K2Ca2Mg(SO4)4·2H2O

Thaumasite and Polyhalite Chemical Formula

While comparing Thaumasite and Polyhalite 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 Polyhalite 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 Polyhalite- K2Ca2Mg(SO4)4·2H2O

Thaumasite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thaumasite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thaumasite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Thaumasite is 2.78 whereas that of Polyhalite is 2.78.