Mineral Information and Data:

Carlfriesite
CaTe6+Te4+2O8 [CNMNC approved formula]

Named for Carl Fries, Jr. (1910-1965), U.S. Geological Survey and the Geological Institute of the National University, Mexico City, Mexico.

IMA status : Approved Species 1975 ()
CLASSIFICATION 
Dana
(8th edition) :
34.05.03.01  
  (34) Selenites - Tellurites - Sulfites
  (34.05)
  (34.05.03)
  
Nickel-Strunz
(10th edition) :
04.JK.25
  (04) Oxides and Hydroxides
  (04.J) Arsenites, Antimonites, Bismuthites, Sulfites,
  (04.JK) Tellurites without additional anions, without H2O
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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