Hodgkinsonite and Apatite Physical Properties

Hodgkinsonite

Apatite

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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

4.06-4.083.16-3.23

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

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

1.6 Cleavage

{???} Perfect

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

4.5-55

2 10

1.8 Chemical Composition

Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Hodgkinsonite and Apatite Chemical Formula

While comparing Hodgkinsonite and Apatite 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 Hodgkinsonite and Apatite chemical formula.

Chemical formula of Hodgkinsonite- Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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Hodgkinsonite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hodgkinsonite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hodgkinsonite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Hodgkinsonite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.