Foitite and Nephrite Physical Properties

Foitite

Nephrite

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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

3.172.90-3.10

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

Splintery, Granular, Splintery, Granular, Gemstones (2009)

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

76-6.5

2 10

1.8 Chemical Composition

Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Foitite and Nephrite Chemical Formula

While comparing Foitite and Nephrite 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 Foitite and Nephrite chemical formula.

Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

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Foitite and Nephrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Foitite and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Foitite is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.