Afghanite and Taaffeite Physical Properties

Afghanite

Taaffeite

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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

2.55-2.653.60-3.61

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Perfect {10 1 0}

Imperfect/fair/absent

1.7 Mohs Hardness

5.5-68-8.5

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)

Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

Afghanite and Taaffeite Chemical Formula

While comparing Afghanite and Taaffeite 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 Taaffeite 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 Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

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Afghanite and Taaffeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Taaffeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Taaffeite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.60-3.61 whereas that of Taaffeite is 3.60-3.61.