Liddicoatite and Sillimanite Physical Properties

Liddicoatite

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

3.023.20-3.26

1 7.18

1.5 Fracture

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

Splintery

1.6 Cleavage

{0001} Poor

{010} perfect

1.7 Mohs Hardness

Not Available6-7.5

2 10

1.8 Chemical Composition

Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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

Liddicoatite and Sillimanite Chemical Formula

While comparing Liddicoatite 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 Liddicoatite and Sillimanite chemical formula.

Chemical formula of Liddicoatite- Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

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Liddicoatite and Sillimanite Specific Gravity

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