Staurolite and Microcline Physical Properties

Staurolite

Microcline

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.7-3.82.55-2.63

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven

Cleavage

Distinct on {010}

{001} Perfect, {010} Good

Mohs Hardness

7-7.56-6.5

2 10

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Chemical Composition

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

KAlSi 3O 8Arthur Thomas , Gemstones (2009)

Staurolite and Microcline Chemical Formula

While comparing Staurolite and Microcline 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 Staurolite and Microcline chemical formula.

Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Microcline- KAlSi 3O 8Arthur Thomas , Gemstones (2009)

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Staurolite and Microcline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Microcline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Microcline Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.55-2.63 whereas that of Microcline is 2.55-2.63.