Staurolite and Bytownite Physical Properties

Staurolite

Bytownite

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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

2.72-2.75

Uneven

Perfect on [001], good on [010], imperfect on [110]

6-6.5

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Staurolite and Bytownite Chemical Formula

While comparing Staurolite and Bytownite 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 Bytownite chemical formula.

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Staurolite and Bytownite Specific Gravity

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