Mineral Information and Data:

Gutkovaite-Mn
CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4 • 5H2O [CNMNC approved formula]

Named for N. N. Gukova (1896-1960?), Russian mineralogist.

IMA status : Approved Species 2002 ()
CLASSIFICATION 
Dana
(8th edition) :
60.01.03f.01  (This Dana# Added)
  (60) Cyclosilicate Four-Membered Rings
  (60.01) as Titanosilicates
  (60.01.03f) Labuntsovite Group (Gutkovaite subgroup Monoclinic [Cm])
  
Nickel-Strunz
(10th edition) :
09.CE.30h
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CE) [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
  
Crystal system: Monoclinic System
Point group (H-M): m — domatic
  
  
  

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