Vivianite and Tourmaline Physical Properties

Vivianite

Tourmaline

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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

2.85-3.35

1.5 Fracture

(e.g. graphite).

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{010} Perfect

Indistinct

1.7 Mohs Hardness

Not Available

7-7.5

1.8 Chemical Composition

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

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Vivianite and Tourmaline Chemical Formula

While comparing Vivianite and Tourmaline 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 Tourmaline chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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Vivianite and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.