Vivianite and Variscite Physical Properties

Vivianite

Variscite

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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

2.64-2.702.42-2.58

1 7.18

1.5 Fracture

(e.g. graphite).

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

{010} Perfect

[010] perfect

1.7 Mohs Hardness

Not Available4-5

2 10

1.8 Chemical Composition

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

AlPO₄ · 2(H₂O)

Vivianite and Variscite Chemical Formula

While comparing Vivianite and Variscite 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 Variscite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Vivianite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.