Orthoclase and Andalusite Physical Properties

Orthoclase

Andalusite

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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

2.54-2.613.05-3.21

1 7.18

1.5 Fracture

Gems, Uneven

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Good on {110}, poor on {100}

1.7 Mohs Hardness

67.5

2 10

1.8 Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Orthoclase and Andalusite Chemical Formula

While comparing Orthoclase and Andalusite 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 Andalusite chemical formula.

Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Colorless Gems

Orthoclase Vs Phosphosiderite

Orthoclase Vs Phenakite

Orthoclase Vs Phosphophyllite

Orthoclase and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Orthoclase and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Orthoclase and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Orthoclase is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.