Sylvite and Boracite Physical Properties

Sylvite

Boracite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

1.9932.95-2.96

1 7.18

1.5 Fracture

Uneven, Brittle

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

None

1.7 Mohs Hardness

2.57-7.5

2 10

1.8 Chemical Composition

Not Available

Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sylvite and Boracite Chemical Formula

While comparing Sylvite and Boracite 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 Boracite chemical formula.

Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sylvite and Boracite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sylvite and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Boracite Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 2.95-2.96 whereas that of Boracite is 2.95-2.96.