Mineral Information and Data:

Rondorfite
Ca8Mg(SiO4)4Cl2 [CNMNC approved formula]

Named for Alice and Eugen Rondorf, two distinguished mineral collectors, who found the mineral with Bernd Ternes in 1979.

IMA status : Approved Species 1997 ()
CLASSIFICATION 
Dana
(8th edition) :
51.04.06.01  (This Dana# Added)
  (51) Nesosilicate Insular SiO4 Groups Only
  (51.04) with cations in [6] and >[6] coordination
  (51.04.06)
  
Nickel-Strunz
(10th edition) :
09.AB.20
  (09) Silicates
  (09.A) Nesosilicates (Isolated tetrahedron) structures
  (09.AB) Nesosilicates without additional anions; cations in [4] and greater coordination
  
Crystal system: Cubic System
Point group (H-M): m3 (or 2/m 3) — diploidal
  
  
  

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