Afghanite and Sanidine Physical Properties

Afghanite

Sanidine

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.652.54-2.61

1 7.18

1.8 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle

Uneven, Uneven, Gems, Sixth Edition (2006)

1.9 Cleavage

Perfect {10 1 0}

{001} Perfect, {010} Good

1.10 Mohs Hardness

5.5-66

2 10

2.5 Chemical Composition

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

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Afghanite and Sanidine Chemical Formula

While comparing Afghanite and Sanidine 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 Afghanite and Sanidine chemical formula.

Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Sanidine- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Afghanite and Sanidine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Sanidine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Sanidine Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.54-2.61 whereas that of Sanidine is 2.54-2.61.