Mineral Information and Data:

Nagelschmidtite
Ca7(SiO4)2(PO4)2 [CNMNC approved formula]

Named for G. Nagelschmidt, who first described the synthetic compound in 1937.

IMA status : Approved Species 1977 ()
CLASSIFICATION 
Dana
(8th edition) :
53.02.02.01  
  (53) Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations
  (53.02) with (SO4), (CrO4), (PO4), etc.
  (53.02.02)
  
Nickel-Strunz
(10th edition) :
09.HA.60
  (09) Silicates
  (09.H) Unclassified Silicates
  (09.HA) With Alkali and Alkali-earth Elements
  
Crystal system: Hexagonal System
Point group (H-M): Unknown — Unk
  
  
  

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