Afghanite and Rosasite Physical Properties

Afghanite

Rosasite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Effervesces in cold

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

4-4.2

1.5 Fracture

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

Splintery

1.6 Cleavage

Perfect {10 1 0}

Perfect on {100} and {010}

1.7 Mohs Hardness

5.5-6

1.8 Chemical Composition

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

Not Available

Afghanite and Rosasite Chemical Formula

While comparing Afghanite and Rosasite 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 Rosasite 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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Afghanite and Rosasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Rosasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Rosasite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 4-4.2 whereas that of Rosasite is 4-4.2.