Marialite and Sillimanite Physical Properties

Marialite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Brittle

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.503.20-3.26

1 7.18

1.5 Fracture

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

Splintery

1.6 Cleavage

Distinct on {100} and {110}

{010} perfect

1.7 Mohs Hardness

5.5-66-7.5

2 10

1.8 Chemical Composition

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

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

Marialite and Sillimanite Chemical Formula

While comparing Marialite 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 Marialite and Sillimanite chemical formula.

Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

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Marialite Vs Padparadscha

Marialite Vs Moss Agate

Marialite and Sillimanite Specific Gravity

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