Labradorite and Montebrasite Physical Properties

Labradorite

Montebrasite

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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

2.69-2.722.98-3.10

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

6-6.55.5-6

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

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

Labradorite and Montebrasite Chemical Formula

While comparing Labradorite and Montebrasite 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 Montebrasite chemical formula.

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

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Labradorite and Montebrasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Montebrasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Montebrasite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.98-3.10 whereas that of Montebrasite is 2.98-3.10.