Mineral Information and Data:

Borocookeite
LiAl4(Si3B)O10(OH)8 [CNMNC approved formula]

Named as the boron-rich analog of cookeite.

IMA status : Approved Species 2003 ()
CLASSIFICATION 
Dana
(8th edition) :
71.04.01.10  (This Dana# Added)
  (71) Phyllosilicate Sheets of Six-Membered Rings
  (71.04) interlayered 1:1, 2:1, and octahedra
  (71.04.01) Chlorite group (Tri-Dioctahedral)
  
Nickel-Strunz
(10th edition) :
09.EC.55
  (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
  
  
  

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