Zinnwaldite and Spinel Physical Properties

Zinnwaldite

Spinel

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.13.64-3.66

1 7.18

1.5 Fracture

Uneven

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect basal {001}

None, but may exhibit slight parting

1.7 Mohs Hardness

3.5-4.08

2 10

1.8 Chemical Composition

Not Available

MgAl₂O₄

Zinnwaldite and Spinel Chemical Formula

While comparing Zinnwaldite and Spinel 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 Zinnwaldite and Spinel chemical formula.

Chemical formula of Spinel- MgAl₂O₄

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Zinnwaldite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zinnwaldite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zinnwaldite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Zinnwaldite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.