Vivianite and Labradorite Physical Properties

Vivianite

Labradorite

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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

2.64-2.702.69-2.72

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

{010} Perfect

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

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

(Na,Ca)_1-2Si_3-2O₈

Vivianite and Labradorite Chemical Formula

While comparing Vivianite 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 Vivianite and Labradorite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Vivianite and Labradorite Specific Gravity

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