Mineral Information and Data:

Ershovite
K3Na4(Fe,Mn,Ti)2Si8O20(OH,O)4 • 4H2O [CNMNC approved formula]

Named after Prof. Vadim Viktorovich Ershov (1939-1989) of the Moscow Mining Institute.

IMA status : Approved Species 1993 ()
CLASSIFICATION 
Dana
(8th edition) :
66.01.05.01  
  (66) Inosilicate Double-Width Unbranched Chains, W=2
  (66.01) with P=2 amphibole configuration
  (66.01.05)
  
Nickel-Strunz
(10th edition) :
09.DF.15
  (09) Silicates
  (09.D) Inosilicates* Structural terminology per Liebau (1985)
  (09.DF) with 2-periodic multiple chains
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
  

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