Staurolite and Humite Physical Properties

Staurolite

Humite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

3.7-3.8

Subconchoidal, Conchoidal

Distinct on {010}

7-7.5

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

Brittle

3.20-3.32

Uneven, Conchoidal

Poor

6-6.5

(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

Staurolite and Humite Chemical Formula

While comparing Staurolite and Humite 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 Humite chemical formula.

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Staurolite and Humite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Humite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite Vs Humite during the identification of gemstone. Specific gravity of Staurolite is whereas that of Humite is .