Thomsonite and Bertrandite Physical Properties

Thomsonite

Bertrandite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.25-2.402.59-2.60

1 7.18

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Fracture

Cleavage

perfect on {010}; good on {100}

{001} Perfect, {110} Distinct, {101} Distinct

Mohs Hardness

5-5.56-7

2 10

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Chemical Composition

NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Thomsonite and Bertrandite Chemical Formula

While comparing Thomsonite and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Thomsonite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thomsonite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.