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Andalusite
Andalusite

Plasma
Plasma



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Andalusite
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Andalusite and Plasma Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.05-3.21-9999
1 7.18
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Fracture

Uneven, Subconchoidal, Splintery
-

Cleavage

Good on {110}, poor on {100}
None

Mohs Hardness

7.5-9999
2 10
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Chemical Composition

Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
Cu9(AsO4)2(OH)10

Andalusite and Plasma Chemical Formula

While comparing Andalusite and Plasma 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 Andalusite and Plasma chemical formula.

  • Chemical formula of Andalusite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
  • Chemical formula of Plasma- Cu9(AsO4)2(OH)10

Andalusite and Plasma Specific Gravity

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