Mineral Information and Data:

Shuiskite
Ca2MgCr2(SiO4)(Si2O7)(OH)2 • H2O [CNMNC approved formula]

Named for V. P. Shuisk, petrologist of the Ural Scientific Center, Yekaterinburg (Sverdlovsk), Russia.

IMA status : Approved Species 1926 ()
CLASSIFICATION 
Dana
(8th edition) :
58.02.02.0  
  (58) Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.02) with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.02.02) Pumpellyite group
  
Nickel-Strunz
(10th edition) :
09.BG.20
  (09) Silicates
  (09.B) Sorosilicates (dimer) structures
  (09.BG) Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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