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Hackmanite
Hackmanite

Pollucite
Pollucite



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Hackmanite
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Pollucite

Hackmanite 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
2.27-2.33
2.86-2.94
1.5 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Not Available
None observed
1.7 Mohs Hardness
5.5-6
6.5-7
1.8 Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael O’Donoghue , Gems, Sixth Edition (2006)
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Hackmanite and Pollucite Chemical Formula

While comparing Hackmanite 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 Hackmanite and Pollucite chemical formula.

  • Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Hackmanite and Pollucite Specific Gravity

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