Apatite and Anorthoclase Physical Properties

Apatite

Anorthoclase

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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

3.16-3.23

2.56-2.62

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

From the Greek for oblique and fracture, descriptive of the cleavage

1.7 Mohs Hardness

6-6.5

1.8 Chemical Composition

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

(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Apatite and Anorthoclase Chemical Formula

While comparing Apatite and Anorthoclase 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 Anorthoclase 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 Anorthoclase- (Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Apatite and Anorthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.