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Sellaite
Sellaite

Pezzottaite
Pezzottaite



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Sellaite and Pezzottaite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.14-3.16
2.90-3.14
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Perfect on {010} and {110}
Imperfect; basal
1.7 Mohs Hardness
5-5.5
7.5-8
1.8 Chemical Composition
MgF 2Ulrich Henn and Claudio C.
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Sellaite and Pezzottaite Chemical Formula

While comparing Sellaite and Pezzottaite 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 Sellaite and Pezzottaite chemical formula.

  • Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
  • Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Sellaite and Pezzottaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Pezzottaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Pezzottaite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 2.90-3.14 whereas that of Pezzottaite is 2.90-3.14.