Thomsonite and Afghanite Physical Properties

Thomsonite

Afghanite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.25-2.402.55-2.65

1 7.18

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Fracture

Conchoidal

Cleavage

perfect on {010}; good on {100}

Perfect {10 1 0}

Mohs Hardness

5-5.55.5-6

2 10

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Chemical Composition

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

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Thomsonite and Afghanite Chemical Formula

While comparing Thomsonite and Afghanite 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 Afghanite 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 Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

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Thomsonite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thomsonite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.