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Actinolite
Actinolite

Blue John
Blue John



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Actinolite
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Blue John

Actinolite and Blue John Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.003.00-3.25
1 7.18
👆🏻

Fracture

Uneven, Splintery
-

Cleavage

perfect along {110}.
Perfect

Mohs Hardness

5-6-9999
2 10
👆🏻

Chemical Composition

Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Actinolite and Blue John Chemical Formula

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

  • Chemical formula of Actinolite- Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Actinolite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Actinolite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Actinolite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Actinolite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.