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Kyanite
Kyanite

Phosphophyllite
Phosphophyllite



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Kyanite
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Phosphophyllite

Kyanite and Phosphophyllite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.53-3.653.07-3.13
1 7.18
👆🏻

Fracture

Splintery
Conchoidal, Uneven

Cleavage

[100] perfect [010] imperfect with 79° angle between
{100} Perfect, {010} Distinct, {102} Distinct

Mohs Hardness

4-73-3.5
2 10
👆🏻

Chemical Composition

Al2SiO5
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Phosphophyllite Chemical Formula

While comparing Kyanite and Phosphophyllite 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 Phosphophyllite chemical formula.

  • Chemical formula of Kyanite- Al2SiO5
  • Chemical formula of Phosphophyllite- Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Phosphophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Phosphophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Phosphophyllite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.07-3.13 whereas that of Phosphophyllite is 3.07-3.13.