Spinel and Montebrasite Physical Properties

Spinel

Montebrasite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.64-3.662.98-3.10

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Conchoidal

Cleavage

None, but may exhibit slight parting

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

Mohs Hardness

85.5-6

2 10

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Chemical Composition

MgAl₂O₄

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

Spinel and Montebrasite Chemical Formula

While comparing Spinel 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 Spinel and Montebrasite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

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Spinel and Montebrasite Specific Gravity

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