Labradorite and Zincite Physical Properties

Labradorite

Zincite

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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

2.69-2.725.50-5.90

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

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

On {10 1 0}, perfect; parting on {000 1 }

1.7 Mohs Hardness

6-6.54

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

Labradorite and Zincite Chemical Formula

While comparing Labradorite and Zincite 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 Zincite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Labradorite and Zincite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Zincite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Zincite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 5.50-5.90 whereas that of Zincite is 5.50-5.90.