Vivianite and Fluorite Physical Properties

Vivianite

Fluorite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.703.00-3.25

1 7.18

1.5 Fracture

(e.g. graphite).

Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

{010} Perfect

Octahedral, perfect on {111}, parting on {011}

1.7 Mohs Hardness

Not Available4

2 10

1.8 Chemical Composition

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

CaF₂

Vivianite and Fluorite Chemical Formula

While comparing Vivianite and Fluorite 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 Fluorite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Fluorite- CaF₂

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Vivianite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.