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Kyanite
Kyanite

Sphalerite
Sphalerite



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Kyanite
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Sphalerite

Kyanite and Sphalerite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.53-3.653.95-4.10
1 7.18
👆🏻

Fracture

Splintery
Uneven

Cleavage

[100] perfect [010] imperfect with 79° angle between
{110} Perfect, {110} Perfect, {110} Perfect

Mohs Hardness

4-73.5-4
2 10
👆🏻

Chemical Composition

Al2SiO5
(Zn,Fe)SMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Sphalerite Chemical Formula

While comparing Kyanite and Sphalerite 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 Kyanite and Sphalerite chemical formula.

  • Chemical formula of Kyanite- Al2SiO5
  • Chemical formula of Sphalerite- (Zn,Fe)SMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Sphalerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Sphalerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Sphalerite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.95-4.10 whereas that of Sphalerite is 3.95-4.10.