Apatite and Spodumene Physical Properties

Apatite

Spodumene

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.233.15-3.21

1 7.18

1.5 Fracture

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

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

1.7 Mohs Hardness

56-7

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

LiAlSi₂O₆

Apatite and Spodumene Chemical Formula

While comparing Apatite and Spodumene 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 Spodumene 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 Spodumene- LiAlSi₂O₆

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Apatite and Spodumene Specific Gravity

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