Langbeinite and Vivianite Physical Properties

Langbeinite

Vivianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Slowly dissolves in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.64-2.70

1 7.18

1.5 Fracture

Conchoidal, Brittle

(e.g. graphite).

1.6 Cleavage

None

{010} Perfect

1.7 Mohs Hardness

3.5-4Not Available

2 10

1.8 Chemical Composition

Not Available

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

Langbeinite and Vivianite Chemical Formula

While comparing Langbeinite and Vivianite 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 Langbeinite and Vivianite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Langbeinite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Langbeinite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Langbeinite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Langbeinite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.