1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.56-2.604.28-4.42
1
7.18
1.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
1.6 Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Distinct on [010] and [100] poor on [101]
1.7 Mohs Hardness
1.8 Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)