Montebrasite and Pargasite Physical Properties

Montebrasite

Pargasite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.98-3.103.04-3.26

1 7.18

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Fracture

Uneven, Conchoidal

Splintery, Uneven

Cleavage

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

{110} perfect

Mohs Hardness

5.5-65-6

2 10

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Chemical Composition

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

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Montebrasite and Pargasite Chemical Formula

While comparing Montebrasite and Pargasite 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 Pargasite 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 Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Montebrasite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Montebrasite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Montebrasite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.