Baryte and Afghanite Physical Properties

Baryte

Afghanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.3-5

2.55-2.65

1.5 Fracture

Irregular/uneven

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

1.6 Cleavage

Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect

Perfect {10 1 0}

1.7 Mohs Hardness

3-3.5

5.5-6

1.8 Chemical Composition

Not Available

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

Baryte and Afghanite Chemical Formula

While comparing Baryte 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 Baryte and Afghanite 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)

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Baryte and Afghanite Specific Gravity

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