Bertrandite and Marialite Physical Properties

Bertrandite

Marialite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.59-2.602.50

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

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

Distinct on {100} and {110}

1.7 Mohs Hardness

6-75.5-6

2 10

1.8 Chemical Composition

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

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

Bertrandite and Marialite Chemical Formula

While comparing Bertrandite and Marialite 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 Marialite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

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Bertrandite and Marialite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Marialite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Marialite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 2.50 whereas that of Marialite is 2.50.