Spinel and Sanidine Physical Properties

Spinel

Sanidine

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

none

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.662.54-2.61

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

None, but may exhibit slight parting

{001} Perfect, {010} Good

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

MgAl₂O₄

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

Spinel and Sanidine Chemical Formula

While comparing Spinel 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 Spinel and Sanidine chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Sanidine- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Spinel and Sanidine Specific Gravity

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