Vivianite and Sunstone Physical Properties

Vivianite

Sunstone

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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

2.64-2.702.62-2.65

1 7.18

1.5 Fracture

(e.g. graphite).

Gemstones of the world (2001)

1.6 Cleavage

{010} Perfect

001

1.7 Mohs Hardness

Not Available6

2 10

1.8 Chemical Composition

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

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

Vivianite and Sunstone Chemical Formula

While comparing Vivianite and Sunstone 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 Sunstone chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

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Vivianite and Sunstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.