Fluorapatite and Realgar Physical Properties

Fluorapatite

Realgar

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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

3.1-3.253.56

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

Indistinct

{010} Good

1.7 Mohs Hardness

5Not Available

2 10

1.8 Chemical Composition

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

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Fluorapatite and Realgar Chemical Formula

While comparing Fluorapatite and Realgar 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 Realgar chemical formula.

Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

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Fluorapatite and Realgar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorapatite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorapatite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Fluorapatite is 3.56 whereas that of Realgar is 3.56.