Moonstone and Augelite Physical Properties
Specific Gravity
2.56-2.60
2.70-2.75
Fracture
Uneven, ConchoidalWalter Schumann
Conchoidal
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
From the Greek for luster, for its pearly luster on the cleavage.
Mohs Hardness
6-6.5
4.5-5
Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Moonstone and Augelite Chemical Formula
While comparing Moonstone and Augelite 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 Moonstone and Augelite chemical formula.
- Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
- Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Moonstone and Augelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Moonstone and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Augelite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 2.70-2.75 whereas that of Augelite is 2.70-2.75.