Diaspore and Vivianite Physical Properties

Diaspore

Vivianite

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.402.64-2.70

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

(e.g. graphite).

1.6 Cleavage

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

{010} Perfect

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

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

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

Diaspore and Vivianite Chemical Formula

While comparing Diaspore 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 Diaspore and Vivianite chemical formula.

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

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Diaspore and Vivianite Specific Gravity

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