Hodgkinsonite and Sillimanite Physical Properties

Hodgkinsonite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.06-4.083.20-3.26

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

Splintery

1.6 Cleavage

{???} Perfect

{010} perfect

1.7 Mohs Hardness

4.5-56-7.5

2 10

1.8 Chemical Composition

Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Hodgkinsonite and Sillimanite Chemical Formula

While comparing Hodgkinsonite 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 Hodgkinsonite and Sillimanite chemical formula.

Chemical formula of Hodgkinsonite- Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Violet Gemstones

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Hodgkinsonite and Sillimanite Specific Gravity

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