Afghanite and Gaylussite Physical Properties

Afghanite

Gaylussite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

decomposes in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

1.93-1.99

1.5 Fracture

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

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect {10 1 0}

perfect [110]

1.7 Mohs Hardness

5.5-6

2.5

1.8 Chemical Composition

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

Na2Ca(CO3)2•5(H2O)

Afghanite and Gaylussite Chemical Formula

While comparing Afghanite and Gaylussite 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 Gaylussite 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 Gaylussite- Na2Ca(CO3)2•5(H2O)

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Afghanite and Gaylussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Gaylussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Gaylussite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 1.93-1.99 whereas that of Gaylussite is 1.93-1.99.