Orthoclase and Feldspar Physical Properties

Orthoclase

Feldspar

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.54-2.612.56-2.75

1 7.18

1.5 Fracture

Gems, Uneven

Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

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

two or three

1.7 Mohs Hardness

66-6.5

2 10

1.8 Chemical Composition

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

Not Available

Orthoclase and Feldspar Chemical Formula

While comparing Orthoclase and Feldspar 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 Feldspar chemical formula.

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

Compare Colorless Gems

Orthoclase Vs Phosphophyllite

Orthoclase Vs Phosphosiderite

Orthoclase Vs Phenakite

Orthoclase and Feldspar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Orthoclase and Feldspar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Orthoclase and Feldspar Optical Properties during the identification of gemstone. Specific gravity of Orthoclase is 2.56-2.75 whereas that of Feldspar is 2.56-2.75.