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Milarite
Milarite

Sillimanite
Sillimanite



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Milarite
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Sillimanite

Milarite and Sillimanite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Tough
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.52-2.603.20-3.26
Amber
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
Amber
2 10
1.8 Chemical Composition
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael O’Donoghue , 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 O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

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.