Foitite and Hematite Physical Properties

Foitite

Hematite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.175.00-5.30

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

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

1.6 Cleavage

None

None, may show partings on {0001} and {10 1 1}

1.7 Mohs Hardness

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)

Fe 2O 3Arthur Thomas , Gemstones (2009)

Foitite and Hematite Chemical Formula

While comparing Foitite and Hematite 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 Hematite 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 Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Compare Violet Gemstones

Foitite Vs Hureaulite

Foitite Vs Labradorite

Foitite Vs Hydrogrossular

Foitite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Foitite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Foitite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.