Vivianite and Forsterite Physical Properties

Vivianite

Forsterite

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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

2.64-2.703.23-3.26

1 7.18

1.5 Fracture

(e.g. graphite).

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

1.6 Cleavage

{010} Perfect

Perfect on {010} imperfect on {100}

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.

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Vivianite and Forsterite Chemical Formula

While comparing Vivianite and Forsterite 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 Forsterite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Vivianite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.