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Narsarsukite
Narsarsukite

Sillimanite
Sillimanite



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Narsarsukite
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Sillimanite

Narsarsukite and Sillimanite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Tough
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.72-2.833.20-3.26
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Splintery
1.6 Cleavage
Good on {100} and {110}
{010} perfect
1.7 Mohs Hardness
6-76-7.5
Amber
2 10
1.8 Chemical Composition
Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Narsarsukite and Sillimanite Chemical Formula

While comparing Narsarsukite and Sillimanite 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 Narsarsukite and Sillimanite chemical formula.

  • Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Narsarsukite and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Narsarsukite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Narsarsukite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Narsarsukite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.