Vivianite and Bertrandite Physical Properties

Vivianite

Bertrandite

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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

2.64-2.702.59-2.60

1 7.18

1.5 Fracture

(e.g. graphite).

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

{010} Perfect

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

1.7 Mohs Hardness

Not Available6-7

2 10

1.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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

Vivianite and Bertrandite Chemical Formula

While comparing Vivianite and Bertrandite 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 Vivianite and Bertrandite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Vivianite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.