Chalcopyrite and Sillimanite Physical Properties

Chalcopyrite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Brittle

Tough

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.1-4.33.20-3.26

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Splintery

1.6 Cleavage

Indistinct on {011}

{010} perfect

1.7 Mohs Hardness

3.5-46-7.5

2 10

1.8 Chemical Composition

CuFeS 2Anthony et al , Handbook of mineralogy (2001)

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

Chalcopyrite and Sillimanite Chemical Formula

While comparing Chalcopyrite 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 Chalcopyrite and Sillimanite chemical formula.

Chemical formula of Chalcopyrite- CuFeS 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Chalcopyrite and Sillimanite Specific Gravity

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