Sillimanite and Strontianite Physical Properties

Sillimanite

Strontianite

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1 Physical Properties

1.1 Tenacity

Tough

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.263.63-3.79

1 7.18

1.5 Fracture

Splintery

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

{010} perfect

{110} Good

1.7 Mohs Hardness

6-7.53.5

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references

Sillimanite and Strontianite Chemical Formula

While comparing Sillimanite and Strontianite 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 Sillimanite and Strontianite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Strontianite- SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references

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Sillimanite and Strontianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Strontianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Strontianite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.63-3.79 whereas that of Strontianite is 3.63-3.79.