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Pyrophyllite
Pyrophyllite

Norbergite
Norbergite



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Pyrophyllite
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Norbergite

Pyrophyllite and Norbergite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.65-2.903.177
Amber
1 7.18
1.5 Fracture
Gemstones (2009), Flexible Flexible fragments.
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
1.6 Cleavage
{001} Perfect
{???} Distinct
1.7 Mohs Hardness
Not Available6-6.5
Amber
2 10
1.8 Chemical Composition
Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Pyrophyllite and Norbergite Chemical Formula

While comparing Pyrophyllite and Norbergite 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 Pyrophyllite and Norbergite chemical formula.

  • Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Pyrophyllite and Norbergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 3.177 whereas that of Norbergite is 3.177.