Creedite and Vivianite Physical Properties

Creedite

Vivianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.702.64-2.70

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

(e.g. graphite).

1.6 Cleavage

Perfect on {100}

{010} Perfect

1.7 Mohs Hardness

4.5Not Available

2 10

1.8 Chemical Composition

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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

Creedite and Vivianite Chemical Formula

While comparing Creedite and Vivianite 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 Creedite and Vivianite chemical formula.

Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Colorless Gems

Creedite Vs Dravite

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Creedite Vs Diaspore

Creedite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Creedite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Creedite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Creedite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.