Mineral Information and Data:

Manandonite
Li2Al4(Si2AlB)O10(OH)8 [CNMNC approved formula]

Named after its locality: near Mt. Bity on the Manandona River, Madagascar.

IMA status : Valid species (Pre-IMA 1912) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
71.01.02c.06  
  (71) Phyllosilicate Sheets of Six-Membered Rings
  (71.01) with 1:1 layers
  (71.01.02c) Serpentine group (Amesite subgroup)
  
Nickel-Strunz
(10th edition) :
09.ED.15
  (09) Silicates
  (09.E) Phyllosilicates
  (09.ED) Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
  
Crystal system: Triclinic System
Point group (H-M): 1 — pedial
  
  
  

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