Mineral Information and Data:

Stavelotite-(La)
La3Mn2+3Cu2+(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30 [CNMNC approved formula]

Named for the Stavelot Massif in the Belgian Ardennes Mountains, and Stavelot, which is a historical town in eastern Belgium.

IMA status : Approved Species 2004 ()
CLASSIFICATION 
Dana
(8th edition) :
55.04.04.01  (This Dana# Added)
  (55) Sorosilicate Si2O7 Groups, Generally with No Additional Anions
  (55.04) with cations in [8] and lower coordination
  (55.04.04)
  
Nickel-Strunz
(10th edition) :
09.BE.87
  (09) Silicates
  (09.B) Sorosilicates (dimer) structures
  (09.BE) Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
  
Crystal system: Trigonal System
Point group (H-M): 3 — pyramidal
  
  
  

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