Fluorapatite and Black Opal Physical Properties

Fluorapatite

Black Opal

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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

3.1-3.251.97-2.22

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Indistinct

Not Available

1.7 Mohs Hardness

56-6.5

2 10

1.8 Chemical Composition

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

SiO 2 + H 2OUlrich Henn and Claudio C.

Fluorapatite and Black Opal Chemical Formula

While comparing Fluorapatite and Black Opal 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 Fluorapatite and Black Opal chemical formula.

Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Blue Gemstones

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Fluorapatite Vs Hackmanite

Fluorapatite Vs Hibonite

Fluorapatite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorapatite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorapatite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Fluorapatite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.