Plumbogummite and Staurolite Physical Properties

Plumbogummite

Staurolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.0143.7-3.8

1 7.18

1.5 Fracture

Uneven, Conchoidal

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

1.6 Cleavage

None

Distinct on {010}

1.7 Mohs Hardness

4-57-7.5

2 10

1.8 Chemical Composition

Not Available

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

Plumbogummite and Staurolite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Staurolite chemical formula.

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

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Plumbogummite and Staurolite Specific Gravity

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