Dravite and Fluorapatite Physical Properties

Dravite

Fluorapatite

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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

3.03-3.183.1-3.25

1 7.18

1.5 Fracture

Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

{???} Indistinct

Indistinct

1.7 Mohs Hardness

7-7.55

2 10

1.8 Chemical Composition

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)

Dravite and Fluorapatite Chemical Formula

While comparing Dravite and Fluorapatite 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 Dravite and Fluorapatite chemical formula.

Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

Dravite Vs Fluorite

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Dravite Vs Gahnite

Dravite and Fluorapatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Fluorapatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Fluorapatite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.1-3.25 whereas that of Fluorapatite is 3.1-3.25.