Spinel and Papagoite Physical Properties

Spinel

Papagoite

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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

3.64-3.663.25

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic

1.6 Cleavage

None, but may exhibit slight parting

Imperfect in one direction

1.7 Mohs Hardness

85-5.5

2 10

1.8 Chemical Composition

MgAl₂O₄

CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Spinel and Papagoite Chemical Formula

While comparing Spinel and Papagoite 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 Papagoite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Papagoite- CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Spinel and Papagoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Papagoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Papagoite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 3.25 whereas that of Papagoite is 3.25.