Mineral Information and Data:

Manasseite
Mg6Al2CO3(OH)16 • 4H2O [CNMNC approved formula]

Named for Ernesto Manasse (1875-1922), mineralogist of Florence, Italy.

IMA status : Valid species (Pre-IMA 1941) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
16b.06.01.01  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.06)
  (16b.06.01) Sjorgrenite-Hydrotalcite Group (Sojogrenite Subgroup:Hexagonal)
  
Nickel-Strunz
(10th edition) :
05.DA.45
  (05) Carbonates and Nitrates
  (05.D) Carbonates with Additional Anions, with H2O
  (05.DA) With medium-sized cations
  
Crystal system: Hexagonal System
Point group (H-M): 6/mmm (or 6/m 2/m 2/m) — dihexagonal-dipyramidal
  
  
  

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