Afghanite and Chrome Tourmaline Physical Properties

Afghanite

Chrome Tourmaline

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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

2.55-2.65

2.85-3.35

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect {10 1 0}

3,2

1.7 Mohs Hardness

5.5-6

7-7.5

1.8 Chemical Composition

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

Tourmaline is a series of several different minerals with unique chemical formulas.

Afghanite and Chrome Tourmaline Chemical Formula

While comparing Afghanite and Chrome Tourmaline 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 Chrome Tourmaline 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 Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.

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Afghanite and Chrome Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Chrome Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Chrome Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.85-3.35 whereas that of Chrome Tourmaline is 2.85-3.35.