Spinel and Dolomite Physical Properties

Spinel

Dolomite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

none

Poorly soluble in dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.662.80-2.95

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

None, but may exhibit slight parting

Perfect on {10 1 1}, rhombohedral cleavage

1.7 Mohs Hardness

83.5-4

2 10

1.8 Chemical Composition

MgAl₂O₄

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Spinel and Dolomite Chemical Formula

While comparing Spinel and Dolomite 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 Dolomite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Spinel and Dolomite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.