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Phlogopite
Phlogopite

Achroite
Achroite



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Phlogopite
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Achroite

Phlogopite and Achroite Physical Properties

1 Physical Properties
1.1 Tenacity
Tough
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.78-2.852.90-3.40
Amber
1 7.18
1.5 Fracture
None, Uneven
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
Perfect basal (001)
Not Available
1.7 Mohs Hardness
2-2.57-7.5
Amber
2 10
1.8 Chemical Composition
Not Available
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Phlogopite and Achroite Chemical Formula

While comparing Phlogopite and Achroite 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 Phlogopite and Achroite chemical formula.

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  • Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Phlogopite and Achroite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.