Labradorite and Poldervaartite Physical Properties

Labradorite

Poldervaartite

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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

2.69-2.722.91

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

6-6.5Not Available

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Labradorite and Poldervaartite Chemical Formula

While comparing Labradorite and Poldervaartite 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 Poldervaartite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

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Labradorite and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.91 whereas that of Poldervaartite is 2.91.