Labradorite and Foitite Physical Properties

Labradorite

Foitite

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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

2.69-2.723.17

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Handbook of mineralogy (2001)

1.6 Cleavage

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

None

1.7 Mohs Hardness

6-6.57

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

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

Labradorite and Foitite Chemical Formula

While comparing Labradorite and Foitite 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 Labradorite and Foitite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
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)

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Labradorite and Foitite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Foitite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Foitite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.17 whereas that of Foitite is 3.17.