Mineral Information and Data:

Droninoite
Ni3Fe3+Cl(OH)8 • 2H2O [CNMNC approved formula]

Named for the locality: Dronino village, Kasimov District, Ryazan’ Oblast, 350 km south-east of Moscow, Russia.

IMA status : Approved Species 2008 ()
CLASSIFICATION 
Dana
(8th edition) :
16b.06.02.05  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.06)
  (16b.06.02) Sjorgrenite-Hydrotalcite Group (Hydrotalcite Subgroup:Rhombohedral)
  
Nickel-Strunz
(10th edition) :
03.DA.60
  (03) Halides
  (03.D) Oxyhalides, Hydroxyhalides and Related Double Halides
  (03.DA) With Cu, etc., without Pb
  
Crystal system:  
Point group (H-M):
  
  
  

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