Sylvite and Neptunite Physical Properties

Sylvite

Neptunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9933.19-3.23

1 7.18

1.5 Fracture

Uneven, Brittle

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

1.6 Cleavage

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

{110} good

1.7 Mohs Hardness

2.55-6

2 10

1.8 Chemical Composition

Not Available

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

Sylvite and Neptunite Chemical Formula

While comparing Sylvite and Neptunite 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 Sylvite and Neptunite chemical formula.

Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sylvite and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sylvite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.