Afghanite and Albite Physical Properties

Afghanite

Albite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

2.60-2.65

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

Perfect {10 1 0}

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

5.5-6

6-6.5

1.8 Chemical Composition

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

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

Afghanite and Albite Chemical Formula

While comparing Afghanite and Albite 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 Albite 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 Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

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Afghanite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Albite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.60-2.65 whereas that of Albite is 2.60-2.65.