Staurolite and Chrome Tourmaline Physical Properties

Staurolite

Chrome Tourmaline

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.82.85-3.35

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Distinct on {010}

3,2

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

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

Tourmaline is a series of several different minerals with unique chemical formulas.

Staurolite and Chrome Tourmaline Chemical Formula

While comparing Staurolite and Chrome Tourmaline 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 Chrome Tourmaline chemical formula.

Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.

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Staurolite and Chrome Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Chrome Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Chrome Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.85-3.35 whereas that of Chrome Tourmaline is 2.85-3.35.