Augite and Annabergite Physical Properties

Augite

Annabergite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.19-3.563.07

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

{110} Perfect, {010} Indistinct

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

1.7 Mohs Hardness

5.5-62

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Ni3(AsO4)2•8(H2O)

Augite and Annabergite Chemical Formula

While comparing Augite and Annabergite 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 Augite and Annabergite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

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Augite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Augite is 3.07 whereas that of Annabergite is 3.07.