1 Physical Properties
1.2 Tenacity
1.4 Solubility
Not Available
Not Available
1.6 Durability
Not Available
Not Available
1.8 Specific Gravity
2.56-2.602.25-2.33
1
7.18
1.11 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Brittle, Metallic, Brittle, Metallic
1.13 Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Good on {010}
1.14 Mohs Hardness
1.16 Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Ca(VO)Si4O10•4(H2O)