Mineral Information and Data:

Merrihueite
K2Mg2(Fe2+3Si12)O30 [CNMNC approved formula]

Named for Craig M. Merrihue (?-1965), meteoriticist, of the Smithsonian Astrophysical Observatory, Cambridge, Massachusetts, USA.

IMA status : Approved Species 1965 ()
CLASSIFICATION 
Dana
(8th edition) :
63.02.01a.05  
  (63) Cyclosilicate Condensed Rings
  (63.02) 6-membered rings
  (63.02.01a) Milarite - Osumilite group (Milarite - Osumilite subgroup)
  
Nickel-Strunz
(10th edition) :
09.CM.05
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CM) [Si6O18]12- 6-membered double rings (sechser-Doppelringe)
  
Crystal system: Hexagonal System
Point group (H-M): 6/mmm (or 6/m 2/m 2/m) — dihexagonal-dipyramidal
  
  
  

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