Vivianite and Mottramite Physical Properties

Vivianite

Mottramite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.705.9

1 7.18

1.5 Fracture

(e.g. graphite).

Sub-Conchoidal, Brittle, Metallic

1.6 Cleavage

{010} Perfect

None observed

1.7 Mohs Hardness

Not Available3

2 10

1.8 Chemical Composition

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

Not Available

Vivianite and Mottramite Chemical Formula

While comparing Vivianite and Mottramite 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 Mottramite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Vivianite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 5.9 whereas that of Mottramite is 5.9.