Montebrasite and Labradorite Physical Properties

Montebrasite

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

2.98-3.102.69-2.72

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

{100} Perfect, {110} Good, {011} Distinct

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

1.7 Mohs Hardness

5.5-66-6.5

2 10

1.8 Chemical Composition

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

(Na,Ca)_1-2Si_3-2O₈

Montebrasite and Labradorite Chemical Formula

While comparing Montebrasite 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 Montebrasite and Labradorite chemical formula.

Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Montebrasite and Labradorite Specific Gravity

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