Neptunite and Fluorapatite Physical Properties

Neptunite

Fluorapatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.19-3.233.1-3.25

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{110} good

Indistinct

1.7 Mohs Hardness

5-65

2 10

1.8 Chemical Composition

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Neptunite and Fluorapatite Chemical Formula

While comparing Neptunite 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 Neptunite and Fluorapatite chemical formula.

Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

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Neptunite Vs Pyrope

Neptunite and Fluorapatite Specific Gravity

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