Mineral Information and Data:

Coutinhoite  
ThxBa1-2x(UO2)2Si5O13 • 3H2O [CNMNC approved formula]

Named for Jose Moacyr Vianna Coutinho (1924-), Professor of Mineralogy and Petrography the the Instituto de Geociencieas of Universidad de Sao Paulo, Brazil.

IMA status : Approved Species 2004 ()
CLASSIFICATION 
Dana
(8th edition) :
53.03.02.04  (This Dana# Added)
  (53) Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations
  (53.03) with (UO2)
  (53.03.02) Weeksite group
  
Nickel-Strunz
(10th edition) :
09.AK.30
  (09) Silicates
  (09.A) Nesosilicates (Isolated tetrahedron) structures
  (09.AK) Uranyl neso- and polysilicates
  
Crystal system:  
Point group (H-M):
  
  
  
Other Properties: Radioactive.
Comments: Radioactive.

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