Apatite and Diaspore Physical Properties

Apatite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.233.30-3.40

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

[0001] indistinct, [1010] indistinct

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

56.5-7

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Apatite and Diaspore Chemical Formula

While comparing Apatite and Diaspore 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 Diaspore 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 Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Apatite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.