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Magnetite
Magnetite

Sillimanite
Sillimanite



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Magnetite
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Sillimanite

Magnetite and Sillimanite Physical Properties

Physical Properties

Tenacity

-
Tough

Solubility

-
-

Durability

-
-

Specific Gravity

5.23.20-3.26
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Splintery

Cleavage

None
{010} perfect

Mohs Hardness

5.5-6.56-7.5
2 10
👆🏻

Chemical Composition

Fe 3O 4Ulrich Henn and Claudio C.
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Magnetite and Sillimanite Chemical Formula

While comparing Magnetite 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 Magnetite and Sillimanite chemical formula.

  • Chemical formula of Magnetite- Fe 3O 4Ulrich Henn and Claudio C.
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Magnetite and Sillimanite Specific Gravity

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