Foitite and Variscite Physical Properties

Foitite

Variscite

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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

3.172.42-2.58

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

None

[010] perfect

1.7 Mohs Hardness

74-5

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)

AlPO₄ · 2(H₂O)

Foitite and Variscite Chemical Formula

While comparing Foitite and Variscite 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 Variscite 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 Variscite- AlPO₄ · 2(H₂O)

Compare Violet Gemstones

Foitite Vs Hureaulite

Foitite Vs Labradorite

Foitite Vs Hydrogrossular

Foitite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Foitite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Foitite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.