Mineral Information and Data:

Manganonordite-(Ce)
Na3SrCeMn2+Si6O17 [CNMNC approved formula]

Named as the Mn++ dominant analogue of nordite-(Ce). Nordite series is named after the word for north because of its northern origin in the Lovozero Massif.

IMA status : Approved Species 1998 ()
CLASSIFICATION 
Dana
(8th edition) :
72.05.02.06  (This Dana# Added)
  (72) Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.05) with corrugated and complex layers
  (72.05.02) Leucospenite and related species
  
Nickel-Strunz
(10th edition) :
09.DO.15
  (09) Silicates
  (09.D) Inosilicates* Structural terminology per Liebau (1985)
  (09.DO) with 7-, 8-, 10-, 12- and 14-periodic chains
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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