Mineral Information and Data:

Gainesite
Na2(Be,Li)(Zr,Zn)2(PO4)4 • 1.5H2O [CNMNC approved formula]

Named for Richard Venable Gaines (1917-1999), American mineralogist, economic geologist, and mineral collector of Earlysville, Virginia, USA, for his interest in beryllium minerals.

IMA status : Approved Species 1983 ()
CLASSIFICATION 
Dana
(8th edition) :
40.05.04.01  
  (40) Hydrated Phosphates
  (40.05) with miscellaneous formulae
  (40.05.04) Gainesite Group
  
Nickel-Strunz
(10th edition) :
08.CA.20
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CA) With small and large/medium cations
  
Crystal system: Tetragonal System
Point group (H-M): 4/mmm (or 4/m 2/m 2/m) — ditetragonal-dipyramidal
  
  
  

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