Apatite and Gaylussite Physical Properties

Apatite

Gaylussite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

decomposes in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.231.93-1.99

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

[0001] indistinct, [1010] indistinct

perfect [110]

1.7 Mohs Hardness

52.5

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

Na2Ca(CO3)2•5(H2O)

Apatite and Gaylussite Chemical Formula

While comparing Apatite and Gaylussite 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 Gaylussite 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 Gaylussite- Na2Ca(CO3)2•5(H2O)

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Apatite and Gaylussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Gaylussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Gaylussite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 1.93-1.99 whereas that of Gaylussite is 1.93-1.99.