Tenacity
-
Brittle
Solubility
-
H₂SO₄
Durability
-
-
Specific Gravity
-99992.74-3.00
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
-
Distinct on {0001} imperfect on {11 2 0}
Mohs Hardness
-99995-5.5
2
10
👆🏻
Chemical Composition
SiO2, Al2O3, CaO, MgO, FeO
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.