Montebrasite and Chlorite group Physical Properties

Montebrasite

Chlorite group

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.98-3.102.6-3.3

1 7.18

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Fracture

Uneven, Conchoidal

Lamellar

Cleavage

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

Perfect 001

Mohs Hardness

5.5-62-2.5

2 10

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Chemical Composition

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

(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6

Montebrasite and Chlorite group Chemical Formula

While comparing Montebrasite and Chlorite group 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 Chlorite group 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 Chlorite group- (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6

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Montebrasite and Chlorite group Specific Gravity

Another important criteria for qualitative analysis of gemstones is Montebrasite and Chlorite group Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite and Chlorite group Optical Properties during the identification of gemstone. Specific gravity of Montebrasite is 2.6-3.3 whereas that of Chlorite group is 2.6-3.3.