Vivianite and Diaspore Physical Properties

Vivianite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.703.30-3.40

1 7.18

1.5 Fracture

(e.g. graphite).

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

{010} Perfect

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Vivianite and Diaspore Chemical Formula

While comparing Vivianite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Vivianite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.