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Cryolite
Cryolite

Ettringite
Ettringite



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Cryolite
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Ettringite

Cryolite and Ettringite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
Partially soluble in water

Durability

-
-

Specific Gravity

2.971.77
1 7.18
👆🏻

Fracture

Uneven
-

Cleavage

None observed
Perfect on {10 1 0}

Mohs Hardness

2.52-2.5
2 10
👆🏻

Chemical Composition

Na 3AlF 6Ulrich Henn and Claudio C.
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Cryolite and Ettringite Chemical Formula

While comparing Cryolite and Ettringite 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 Cryolite and Ettringite chemical formula.

  • Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.
  • Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Cryolite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cryolite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cryolite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Cryolite is 1.77 whereas that of Ettringite is 1.77.