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Apophyllite
Apophyllite

Pollucite
Pollucite



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Apophyllite
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Pollucite

Apophyllite and Pollucite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Readily soluble in HF
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.30-2.50
2.86-2.94
1.5 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Perfect on (001)
None observed
1.7 Mohs Hardness
4.5-5
6.5-7
1.8 Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Apophyllite and Pollucite Chemical Formula

While comparing Apophyllite and Pollucite 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 Apophyllite and Pollucite chemical formula.

  • Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
  • Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Apophyllite and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.