Mineral Information and Data:

Holdawayite
Mn2+6(CO3)2(OH)7(Cl,OH) [CNMNC approved formula]

Named for Michael J. Holdaway of Southern Methodist University.

IMA status : Approved Species 1988 ()
CLASSIFICATION 
Dana
(8th edition) :
16b.04.02.02  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.04) where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=8:1
  (16b.04.02)
  
Nickel-Strunz
(10th edition) :
05.BA.20
  (05) Carbonates and Nitrates
  (05.B) Carbonates with additional anions, without H2O
  (05.BA) With Cu, Co, Ni, Zn, Mg, Mn
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

<<< BACK TO MINERAL SEARCH