Fluorapatite and Marcasite Physical Properties

Fluorapatite

Marcasite

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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

3.1-3.254.80-4.90

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

Indistinct

{010} Indistinct

1.7 Mohs Hardness

56-6.5

2 10

1.8 Chemical Composition

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

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Fluorapatite and Marcasite Chemical Formula

While comparing Fluorapatite and Marcasite 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 Marcasite chemical formula.

Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Fluorapatite and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorapatite and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorapatite and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Fluorapatite is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.