Montebrasite and Iolite Physical Properties

Montebrasite

Iolite

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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

2.98-3.102.6-2.7

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

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

3,1

1.7 Mohs Hardness

5.5-67-7.5

2 10

1.8 Chemical Composition

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

Mg₂Al₄Si₅O₁₈

Montebrasite and Iolite Chemical Formula

While comparing Montebrasite and Iolite 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 Iolite 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 Iolite- Mg₂Al₄Si₅O₁₈

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Montebrasite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Montebrasite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Montebrasite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.