Sphalerite and Afghanite Physical Properties

Sphalerite

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

3.95-4.10

2.55-2.65

1.5 Fracture

UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven

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

1.6 Cleavage

{110} Perfect, {110} Perfect, {110} Perfect

Perfect {10 1 0}

1.7 Mohs Hardness

3.5-4

5.5-6

1.8 Chemical Composition

(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Sphalerite and Afghanite Chemical Formula

While comparing Sphalerite 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 Sphalerite and Afghanite chemical formula.

Chemical formula of Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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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Sphalerite and Afghanite Specific Gravity

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