Mineral Information and Data:

Ilesite
Mn2+SO4 • 4H2O [CNMNC approved formula]

Named for Malvern W. Iles (1853-1890), American metallurgist, Denver, Colorado.

IMA status : Valid species (Pre-IMA 1881) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
29.06.06.03  
  (29) Hydrated Acid and Sulfates
  (29.06) where A XO4 · x(H2O)
  (29.06.06) Rozenite Group (Monoclinic)
  
Nickel-Strunz
(10th edition) :
07.CB.15
  (07) Sulfates (selenates, tellurates, chromates, molybdates, wolframates)
  (07.C) Sulfates (selenates, etc.) without Additional Anions, with H2O
  (07.CB) With only medium-sized cations
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  
Other Properties: H2O Soluble.

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