Phosphophyllite and Gahnite Physical Properties
Specific Gravity
3.07-3.13
4.00-4.62
Fracture
Conchoidal, Uneven
Conchoidal, Uneven
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
Indistinct parting on [111]
Mohs Hardness
3-3.5
7.5-8
Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Phosphophyllite and Gahnite Chemical Formula
While comparing Phosphophyllite and Gahnite 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 Phosphophyllite and Gahnite chemical formula.
- Chemical formula of Phosphophyllite- Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Phosphophyllite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phosphophyllite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphophyllite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Phosphophyllite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.