Augite and Sellaite Physical Properties

Augite

Sellaite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.19-3.563.14-3.16

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{110} Perfect, {010} Indistinct

Perfect on {010} and {110}

1.7 Mohs Hardness

5.5-65-5.5

2 10

1.8 Chemical Composition

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

MgF 2Ulrich Henn and Claudio C.

Augite and Sellaite Chemical Formula

While comparing Augite and Sellaite 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 Sellaite 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 Sellaite- MgF 2Ulrich Henn and Claudio C.

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Augite and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augite and Sellaite Optical Properties during the identification of gemstone. Specific gravity of Augite is 3.14-3.16 whereas that of Sellaite is 3.14-3.16.