Bertrandite and Cat s Eye Physical Properties

Bertrandite

Cat s Eye

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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

2.59-2.603.5-3.8

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Not Available

1.6 Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

1,1 ; 3,2

1.7 Mohs Hardness

6-78.5

2 10

1.8 Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

BeAl ₂ O ₄

Bertrandite and Cat s Eye Chemical Formula

While comparing Bertrandite and Cat s Eye 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 Bertrandite and Cat s Eye chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Cat s Eye- BeAl ₂ O ₄

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Bertrandite and Cat s Eye Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Cat s Eye Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Cat s Eye Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 3.5-3.8 whereas that of Cat s Eye is 3.5-3.8.