Montebrasite and Cordierite Physical Properties

Montebrasite

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.98-3.102.57-2.66

1 7.18

1.5 Fracture

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

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

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

Fair on {100}, poor on {001} and {010}

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 Cordierite Chemical Formula

While comparing Montebrasite and Cordierite 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 Cordierite 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 Cordierite- Mg2Al4Si5O18

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Montebrasite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Montebrasite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Montebrasite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.