Hackmanite and Sylvite Physical Properties

Hackmanite

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.27-2.331.993

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

Uneven, Brittle

1.6 Cleavage

Not Available

Perfect on [100], [010], [001]

1.7 Mohs Hardness

5.5-62.5

2 10

1.8 Chemical Composition

Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Hackmanite and Sylvite Chemical Formula

While comparing Hackmanite and Sylvite 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 Hackmanite and Sylvite chemical formula.

Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Hackmanite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hackmanite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hackmanite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Hackmanite is 1.993 whereas that of Sylvite is 1.993.