Mineral Information and Data:

Marecottite  
Mg3O6(UO2)8(SO4)4(OH)2 • 28H2O [CNMNC approved formula]

Named for the locality: La Creusaz U-prospect near Les Marecottes, Western Swiss Alps, Switzerland.

IMA status : Approved Species 2003 ()
CLASSIFICATION 
Dana
(8th edition) :
31.10.04.07  (This Dana# Added)
  (31) Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.10) miscellaneous
  (31.10.04) Zippeite Group
  
Nickel-Strunz
(10th edition) :
07.EC.15
  (07) Sulfates (selenates, tellurates, chromates, molybdates, wolframates)
  (07.E) Uranyl Sulfates
  (07.EC) With medium-sized and large cations
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
  
Other Properties: Radioactive.
Comments: Radioactive.

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