Barite and Afghanite Physical Properties

Barite

Afghanite

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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

4.482.55-2.65

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

{010} Perfect, {210} Perfect, {010} Imperfect

Perfect {10 1 0}

1.7 Mohs Hardness

3-3.55.5-6

2 10

1.8 Chemical Composition

BaSO4

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

Barite and Afghanite Chemical Formula

While comparing Barite 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 Barite and Afghanite chemical formula.

Chemical formula of Barite- BaSO4
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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Barite and Afghanite Specific Gravity

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