Mineral Information and Data:

Brinrobertsite
(Na,K,Ca)0.3(Al,Fe,Mg)4(Si,Al)8O20(OH)4 • 3.5H2O [CNMNC approved formula]

Named for Brin Roberts, specialist for British clay minerals in the University of London.

IMA status : Approved Species 2002 ()
CLASSIFICATION 
Dana
(8th edition) :
71.02.01.06  (This Dana# Added)
  (71) Phyllosilicate Sheets of Six-Membered Rings
  (71.02) with 2:1 Layers
  (71.02.01) Pyrophyllite-talc group
  
Nickel-Strunz
(10th edition) :
09.EC.60
  (09) Silicates
  (09.E) Phyllosilicates
  (09.EC) Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

<<< BACK TO MINERAL SEARCH