Afghanite and Andesine Physical Properties

Afghanite

Andesine

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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

2.55-2.652.65-2.69

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect {10 1 0}

Perfect on {001}, good on {010}

1.7 Mohs Hardness

5.5-66-6.5

2 10

1.8 Chemical Composition

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

(Na,Ca)Al_1-2Si_3-2O₈

Afghanite and Andesine Chemical Formula

While comparing Afghanite and Andesine 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 Andesine 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 Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Afghanite and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Andesine Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.65-2.69 whereas that of Andesine is 2.65-2.69.