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Chrome-Chalcedony
Chrome-Chalcedony

Poudretteite
Poudretteite



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Chrome-Chalcedony
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Poudretteite

Chrome-Chalcedony and Poudretteite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.70
2.51-2.53
1.5 Fracture
Not Available
Conchoidal, Splintery
1.6 Cleavage
Not Available
None
1.7 Mohs Hardness
6.5-7
5
1.8 Chemical Composition
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Chrome-Chalcedony and Poudretteite Chemical Formula

While comparing Chrome-Chalcedony and Poudretteite 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 Chrome-Chalcedony and Poudretteite chemical formula.

  • Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
  • Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Chrome-Chalcedony and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrome-Chalcedony and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrome-Chalcedony and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Chrome-Chalcedony is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.