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Sillimanite
Sillimanite

Eudialyte
Eudialyte



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Sillimanite
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Eudialyte

Sillimanite and Eudialyte Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
H₂SO₄
-
2.74-3.00
Uneven
Distinct on {0001} imperfect on {11 2 0}
5-5.5
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.

Sillimanite and Eudialyte Chemical Formula

While comparing Sillimanite and Eudialyte 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 Sillimanite and Eudialyte chemical formula.

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Sillimanite and Eudialyte Specific Gravity

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