Mineral Information and Data:

Megacyclite
KNa8Si9O18(OH)9 • 19H2O [CNMNC approved formula]

Named From the Greek for large and cyclical, with reference to the large ringlike groups of silica tetrahedra in the structure.

IMA status : Approved Species 1993 ()
CLASSIFICATION 
Dana
(8th edition) :
62.01.02.01  
  (62) Cyclosilicate Eight-Membered Rings
  (62.01) with 8-membered and larger rings
  (62.01.02)
  
Nickel-Strunz
(10th edition) :
09.CP.10
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CP) 12-membered and larger rings
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

<<< BACK TO MINERAL SEARCH