Mineral Information and Data:

Iwashiroite-(Y)
YTaO4 [CNMNC approved formula]

Named for the old prefectural name of Fukushima prefecture (Iwashiro).

IMA status : Approved Species 2003 ()
CLASSIFICATION 
Dana
(8th edition) :
08.01.03.03  
  (08) Multiple Oxides with Nb, Ta, and Ti
  (08.01) where A BO4
  (08.01.03) Yttroantalalite-Yttrocolumbite Series
  
Nickel-Strunz
(10th edition) :
07.GA.10
  (07) Sulfates (selenates, tellurates, chromates, molybdates, wolframates)
  (07.G) Molybdates, Wolframates and Niobates
  (07.GA) Without additional anions or H2O
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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