Spinel and Iddingsite Physical Properties

Spinel

Iddingsite

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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

3.64-3.662.5-2.8

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

None, but may exhibit slight parting

{???} Perfect

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

MgAl₂O₄

MgO.Fe2O3.3SiO2•4(H2O)

Spinel and Iddingsite Chemical Formula

While comparing Spinel and Iddingsite 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 Iddingsite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Iddingsite- MgO.Fe2O3.3SiO2•4(H2O)

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Spinel and Iddingsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Iddingsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Iddingsite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.5-2.8 whereas that of Iddingsite is 2.5-2.8.