Annabergite and Vivianite Physical Properties

Annabergite

Vivianite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.072.64-2.70

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

(e.g. graphite).

1.6 Cleavage

Perfect on {010}, indistinct on {100} and {102}

{010} Perfect

1.7 Mohs Hardness

2Not Available

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

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

Annabergite and Vivianite Chemical Formula

While comparing Annabergite 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 Annabergite and Vivianite chemical formula.

Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

Annabergite Vs Beudantite

Annabergite Vs Cavansite

Annabergite Vs Chlorite group

Annabergite and Vivianite Specific Gravity

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