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Thomsonite
Thomsonite

Dolomite
Dolomite



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Thomsonite
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Dolomite

Thomsonite and Dolomite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Poorly soluble in dilute HCl

Durability

-
-

Specific Gravity

2.25-2.402.80-2.95
1 7.18
👆🏻

Fracture

-
Conchoidal

Cleavage

perfect on {010}; good on {100}
Perfect on {10 1 1}, rhombohedral cleavage

Mohs Hardness

5-5.53.5-4
2 10
👆🏻

Chemical Composition

NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaMg(CO 3) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Thomsonite and Dolomite Chemical Formula

While comparing Thomsonite and Dolomite 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 Thomsonite and Dolomite chemical formula.

  • Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Dolomite- CaMg(CO 3) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Thomsonite and Dolomite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thomsonite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.