Tenacity
-
Brittle
Solubility
-
H₂SO₄
Durability
-
-
Specific Gravity
2.55-2.652.74-3.00
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven
Cleavage
[1010] Poor
Distinct on {0001} imperfect on {11 2 0}
Mohs Hardness
5-65-5.5
2
10
👆🏻
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.