Sillimanite and Hemimorphite Physical Properties

Sillimanite

Hemimorphite

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1 Physical Properties

1.1 Tenacity

Tough

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.263.30-3.50

1 7.18

1.5 Fracture

Splintery

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

{010} perfect

Perfect on {110}, poor on {101}, {001} rare

1.7 Mohs Hardness

6-7.55

2 10

1.8 Chemical Composition

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

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sillimanite and Hemimorphite Chemical Formula

While comparing Sillimanite and Hemimorphite 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 Hemimorphite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

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Sillimanite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.