Mineral Information and Data:

Gysinite-(Nd)
PbNd(CO3)2(OH) • H2O [CNMNC approved formula]

Named for Marcel Gysin (1891-1974), Professor of Mineralogy, University of Geneva, Geneva, Switzerland.

IMA status : Approved Species 1985 ()
CLASSIFICATION 
Dana
(8th edition) :
16b.01.01.04  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.01) where (A)m (B)n (XO3)p Zq, with (m+n):p=1:1
  (16b.01.01) Ancylite group
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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