Mineral Information and Data:

Strontiodresserite
SrAl2(CO3)2(OH)4 • H2O [CNMNC approved formula]

Named as the strontium analog of dresserite.

IMA status : Approved Species 1977 ()
CLASSIFICATION 
Dana
(8th edition) :
16b.02.01.03  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.02) where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=3:2
  (16b.02.01) Dundasite Group
  
Nickel-Strunz
(10th edition) :
05.DB.10
  (05) Carbonates and Nitrates
  (05.D) Carbonates with Additional Anions, with H2O
  (05.DB) With large and medium-sized cations
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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