Mineral Information and Data:

Ningyoite  
(U,Ca,Ce)2(PO4)2 • 1-2H2O [CNMNC approved formula]

Named for Ningyo Pass, Japan, where the mine in which the mineral was first found is located.

IMA status : Approved Species 1959 ()
CLASSIFICATION 
Dana
(8th edition) :
40.04.08.01  
  (40) Hydrated Phosphates
  (40.04) where A+++ XO4 · x(H2O)
  (40.04.08) Ningyoite Group
  
Nickel-Strunz
(10th edition) :
08.CJ.80
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CJ) With only large cations
  
Crystal system: Orthorhombic System
Point group (H-M): 222 — disphenoidal
  
  
  
Other Properties: Radioactive.
Comments: Radioactive

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