Vishnevite and Ulexite Physical Properties

Vishnevite

Ulexite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available1.65-1.99

1 7.18

1.5 Fracture

Brittle, Uneven

UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic

1.6 Cleavage

Perfect

{010} Perfect, {110} Perfect

1.7 Mohs Hardness

5-62-2.5

2 10

1.8 Chemical Composition

Not Available

NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Vishnevite and Ulexite Chemical Formula

While comparing Vishnevite and Ulexite 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 Vishnevite and Ulexite chemical formula.

Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Vishnevite and Ulexite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vishnevite and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vishnevite and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Vishnevite is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.