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Edenite
Edenite

Staurolite
Staurolite



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Edenite
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Staurolite

Edenite and Staurolite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.05-3.373.7-3.8
1 7.18
👆🏻

Fracture

Conchoidal
Subconchoidal, Conchoidal

Cleavage

Good on (110)
Distinct on {010}

Mohs Hardness

5-67-7.5
2 10
👆🏻

Chemical Composition

NaCa2Mg5Si7AlO22(OH)2
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Edenite and Staurolite Chemical Formula

While comparing Edenite 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 Edenite and Staurolite chemical formula.

  • Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
  • Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Edenite and Staurolite Specific Gravity

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