Orthoclase and Spinel Physical Properties

Orthoclase

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

2.54-2.613.64-3.66

1 7.18

1.5 Fracture

Gems, Uneven

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.

None, but may exhibit slight parting

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

MgAl₂O₄

Orthoclase and Spinel Chemical Formula

While comparing Orthoclase 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 Orthoclase and Spinel chemical formula.

Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Spinel- MgAl₂O₄

Compare Colorless Gems

Orthoclase Vs Phosphophyllite

Orthoclase Vs Phenakite

Orthoclase Vs Phosphosiderite

Orthoclase and Spinel Specific Gravity

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