Mineral Information and Data:

Hiarneite
(Ca,Mn2+,Na)2(Zr,Mn3+)5(Sb,Ti,Fe)2O16 [CNMNC approved formula]

Named after Urban Hiarne (1641-1724), a pioneer in Swedish geology.

IMA status : Approved Species 1995 ()
CLASSIFICATION 
Dana
(8th edition) :
08.07.04.02  
  (08) Multiple Oxides with Nb, Ta, and Ti
  (08.07)
  (08.07.04)
  
Nickel-Strunz
(10th edition) :
04.DL.10
  (04) Oxides and Hydroxides
  (04.D) Metal:Oxygen = 1:2 and similar
  (04.DL) With large (+- medium-sized) cations; fluorite-type structures
  
Crystal system: Tetragonal System
Point group (H-M): 4/mmm (or 4/m 2/m 2/m) — ditetragonal-dipyramidal
  
  
  

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