Sellaite and Sanidine Physical Properties

Sellaite

Sanidine

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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

3.14-3.162.54-2.61

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {010} and {110}

{001} Perfect, {010} Good

1.7 Mohs Hardness

5-5.56

2 10

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Sellaite and Sanidine Chemical Formula

While comparing Sellaite and Sanidine 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 Sellaite and Sanidine chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Sanidine- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sellaite and Sanidine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Sanidine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Sanidine Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 2.54-2.61 whereas that of Sanidine is 2.54-2.61.