Afghanite and Sphalerite Physical Properties

Afghanite

Sphalerite

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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

3.95-4.10

1.5 Fracture

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

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

1.6 Cleavage

Perfect {10 1 0}

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

1.7 Mohs Hardness

5.5-6

3.5-4

1.8 Chemical Composition

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

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

Afghanite and Sphalerite Chemical Formula

While comparing Afghanite and Sphalerite 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 Sphalerite 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 Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Afghanite and Sphalerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Sphalerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Sphalerite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.95-4.10 whereas that of Sphalerite is 3.95-4.10.