Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.56-2.602.71-2.72
1
7.18
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Fracture
Uneven, ConchoidalWalter Schumann
Fibrous
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
{???} Good
Mohs Hardness
6-6.56-6.5
2
10
👆🏻
Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)