Mineral Information and Data:

Zirconolite
(Ca,Y)Zr(Ti,Mg,Al)2O7 [CNMNC approved formula]

Named for the composition.

IMA status : Valid species (Pre-IMA 1989) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
08.02.05.05  
  (08) Multiple Oxides with Nb, Ta, and Ti
  (08.02) where (A)2 (B2O6) (O,OH,F)
  (08.02.05) Zirconolite Group
  
Nickel-Strunz
(10th edition) :
04.DH.30
  (04) Oxides and Hydroxides
  (04.D) Metal:Oxygen = 1:2 and similar
  (04.DH) With large (+- medium-sized) cations; sheets of edge-sharing octahedra
  
Crystal system:  
Point group (H-M):
  
  
  
Comments: Amorphous- No Crystals

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