×

Hemimorphite
Hemimorphite

Petalite
Petalite



ADD
Compare
X
Hemimorphite
X
Petalite

Hemimorphite and Petalite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Soluble
insoluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.30-3.502.40
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
1.6 Cleavage
Perfect on {110}, poor on {101}, {001} rare
Perfect on {001}, poor on {201} with 38.5° angle between the two
1.7 Mohs Hardness
56-6.5
Amber
2 10
1.8 Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
LiAlSi 4O 10Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Hemimorphite and Petalite Chemical Formula

While comparing Hemimorphite and Petalite 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 Hemimorphite and Petalite chemical formula.

  • Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Petalite- LiAlSi 4O 10Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Hemimorphite and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hemimorphite and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Petalite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 2.40 whereas that of Petalite is 2.40.