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Andradite
Andradite

Chlorite group
Chlorite group



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Andradite
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Chlorite group

Andradite and Chlorite group Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
-
-
-
2.6-3.3
Lamellar
Perfect 001
2-2.5
(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6

Andradite and Chlorite group Chemical Formula

While comparing Andradite 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 Andradite and Chlorite group chemical formula.

  • Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Chlorite group- (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6

Andradite and Chlorite group Specific Gravity

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