Staurolite and Scapolite Physical Properties

Staurolite

Scapolite

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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.

2.58-2.74

ConchoidalWalter Schumann, Splintery

{100} Distinct, {110} Distinct

5.5-6

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

Staurolite and Scapolite Chemical Formula

While comparing Staurolite and Scapolite 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 Scapolite chemical formula.

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Staurolite and Scapolite Specific Gravity

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