Tenacity
Brittle
Brittle
Solubility
-
H₂SO₄
Durability
-
-
Specific Gravity
2.502.74-3.00
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven
Cleavage
Distinct on {100} and {110}
Distinct on {0001} imperfect on {11 2 0}
Mohs Hardness
5.5-65-5.5
2
10
👆🏻
Chemical Composition
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.