Nepheline and Fluorapatite Physical Properties

Nepheline

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

2.55-2.653.1-3.25

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

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

1.6 Cleavage

[1010] Poor

Indistinct

1.7 Mohs Hardness

5-65

2 10

1.8 Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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

Nepheline and Fluorapatite Chemical Formula

While comparing Nepheline 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 Nepheline and Fluorapatite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

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Nepheline Vs Pyrope Spessartine

Nepheline and Fluorapatite Specific Gravity

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