Mineral Information and Data:

Calciotantite
CaTa4O11 [CNMNC approved formula]

Named for its composition (Calcium, Tantalum).

IMA status : Approved Species 1982 ()
CLASSIFICATION 
Dana
(8th edition) :
08.06.02.01  
  (08) Multiple Oxides with Nb, Ta, and Ti
  (08.06)
  (08.06.02) Calciotantite Group
  
Nickel-Strunz
(10th edition) :
04.DJ.05
  (04) Oxides and Hydroxides
  (04.D) Metal:Oxygen = 1:2 and similar
  (04.DJ) With large (+- medium-sized) cations; polyhedral frameworks
  
Crystal system: Hexagonal System
Point group (H-M): 622 — trapezoidal
  
  
  

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