Vivianite and Augite Physical Properties

Vivianite

Augite

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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

2.64-2.703.19-3.56

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

{010} Perfect

{110} Perfect, {010} Indistinct

1.7 Mohs Hardness

Not Available5.5-6

2 10

1.8 Chemical Composition

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

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Vivianite and Augite Chemical Formula

While comparing Vivianite and Augite 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 Augite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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Vivianite and Augite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Augite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.19-3.56 whereas that of Augite is 3.19-3.56.