Staurolite and Pyrope Spessartine Physical Properties

Staurolite

Pyrope Spessartine

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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

3.7-3.83.62-4.33

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

1.6 Cleavage

Distinct on {010}

Not Available

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.

Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Staurolite and Pyrope Spessartine Chemical Formula

While comparing Staurolite and Pyrope Spessartine 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 Pyrope Spessartine chemical formula.

Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Pyrope Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Staurolite and Pyrope Spessartine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Pyrope Spessartine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Pyrope Spessartine Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 3.62-4.33 whereas that of Pyrope Spessartine is 3.62-4.33.