Wulfenite and Labradorite Physical Properties

Wulfenite

Labradorite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.002.69-2.72

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

On {011}, distinct; on {001}, {013}, indistinct

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

1.7 Mohs Hardness

36-6.5

2 10

1.8 Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

(Na,Ca)_1-2Si_3-2O₈

Wulfenite and Labradorite Chemical Formula

While comparing Wulfenite and Labradorite 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 Wulfenite and Labradorite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Wulfenite and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.