Tenacity
-
Brittle
Solubility
-
H₂SO₄
Durability
-
-
Specific Gravity
2.74-2.762.74-3.00
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
{010} Perfect, {001} Distinct
Distinct on {0001} imperfect on {11 2 0}
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.