Verdite and Staurolite Physical Properties

Verdite

Staurolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-3.03.7-3.8

1 7.18

1.5 Fracture

Not Available

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

{110} Good

Distinct on {010}

1.7 Mohs Hardness

37-7.5

2 10

1.8 Chemical Composition

NaFeS2•2(H2O)

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

Verdite and Staurolite Chemical Formula

While comparing Verdite and Staurolite 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 Verdite and Staurolite chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

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Verdite and Staurolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Verdite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Verdite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Verdite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.