Agrellite and Apatite Physical Properties

Agrellite

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

2.883.16-3.23

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

perfect [110]

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

5.55

2 10

1.8 Chemical Composition

NaCa2Si4O10F

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

Agrellite and Apatite Chemical Formula

While comparing Agrellite 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 Agrellite and Apatite chemical formula.

Chemical formula of Agrellite- NaCa2Si4O10F
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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Agrellite and Apatite Specific Gravity

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