Mineral Information and Data:

Wollastonite-1A
CaSiO3 [CNMNC approved formula]

Named after the English mineralogist and chemist, W. H. Wollaston (1766-1828).

IMA status : Approved Species 1818 ()
CLASSIFICATION 
Dana
(8th edition) :
65.02.01.01a  
  (65) Inosilicate Single-Width Unbranched Chains, W=1
  (65.02) with chains P=3
  (65.02.01) Wollastonite group
  
Nickel-Strunz
(10th edition) :
09.DG.05
  (09) Silicates
  (09.D) Inosilicates* Structural terminology per Liebau (1985)
  (09.DG) with 3-periodic single and multiple chains
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
  

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