Milarite and Sillimanite Physical Properties

Milarite

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

2.52-2.603.20-3.26

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic

Splintery

1.6 Cleavage

{0001} Imperfect, {1120} Imperfect

{010} perfect

1.7 Mohs Hardness

5.5-66-7.5

2 10

1.8 Chemical Composition

KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Milarite and Sillimanite Chemical Formula

While comparing Milarite 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 Milarite and Sillimanite chemical formula.

Chemical formula of Milarite- KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare White Gemstones

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Milarite and Sillimanite Specific Gravity

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