Vivianite and Antigorite Physical Properties

Vivianite

Antigorite

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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

2.64-2.70

2.58-2.80

1.5 Fracture

(e.g. graphite).

Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)

1.6 Cleavage

{010} Perfect

{001} Good

1.7 Mohs Hardness

Not Available

5-5.5

1.8 Chemical Composition

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

(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Vivianite and Antigorite Chemical Formula

While comparing Vivianite and Antigorite 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 Antigorite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Antigorite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

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Vivianite and Antigorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Antigorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Antigorite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.58-2.80 whereas that of Antigorite is 2.58-2.80.