Mineral Information and Data:

Lyonsite
Cu2+3Fe3+4(VO4)6 [CNMNC approved formula]

Named for John Bartholomew Lyons (1916-1998), Professor of Mineralogy, Dartmouth College, Hanover, New Hampshire, USA.

IMA status : Approved Species 1987 ()
CLASSIFICATION 
Dana
(8th edition) :
38.05.02.01  
  (38) Anhydrous Phosphates, etc
  (38.05) with miscellaneous formulae
  (38.05.02)
  
Nickel-Strunz
(10th edition) :
08.AB.40
  (08) Phosphates, Arsenates, Vanadates
  (08.A) Phosphates, etc. without additional anions, without H2O
  (08.AB) With medium-sized cations
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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