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Blue John
Blue John

Rhodochrosite
Rhodochrosite



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Blue John
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Rhodochrosite

Blue John and Rhodochrosite 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
3.00-3.253.0-3.3
Amber
1 7.18
1.5 Fracture
Not Available
Uneven, Conchoidal, Conchoidal to uneven, Brittle
1.6 Cleavage
Not Available
On {10 1 1} perfect; parting on {10 1 2}
1.7 Mohs Hardness
Not Available3.5-4
Amber
2 10
1.8 Chemical Composition
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
MnCO3

Blue John and Rhodochrosite Chemical Formula

While comparing Blue John and Rhodochrosite 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 Blue John and Rhodochrosite chemical formula.

  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Rhodochrosite- MnCO3

Blue John and Rhodochrosite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Rhodochrosite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Rhodochrosite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 3.0-3.3 whereas that of Rhodochrosite is 3.0-3.3.