Apatite and Sphalerite Physical Properties

Apatite

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

3.16-3.233.95-4.10

1 7.18

1.5 Fracture

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

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

[0001] indistinct, [1010] indistinct

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

1.7 Mohs Hardness

53.5-4

2 10

1.8 Chemical Composition

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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

Apatite and Sphalerite Chemical Formula

While comparing Apatite 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 Apatite and Sphalerite chemical formula.

Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apatite and Sphalerite Specific Gravity

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