Apatite and Hiddenite Physical Properties

Apatite

Hiddenite

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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

3.15-3.21

1.5 Fracture

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

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

1,2 prismatic

1.7 Mohs Hardness

6-7

1.8 Chemical Composition

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

LiAlSi₂O₆

Apatite and Hiddenite Chemical Formula

While comparing Apatite and Hiddenite 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 Hiddenite 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 Hiddenite- LiAlSi₂O₆

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Apatite and Hiddenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Hiddenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Hiddenite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.15-3.21 whereas that of Hiddenite is 3.15-3.21.