Mineral Information and Data:

Shomiokite-(Y)
Na3Y(CO3)3 • 3H2O [CNMNC approved formula]

Named for the Shomiok River, in the Lovozero massif, flowing near Mt. Alluaiv,Russia, where the mineral was first found.

IMA status : Approved Species 1992 ()
CLASSIFICATION 
Dana
(8th edition) :
15.04.07.01  
  (15) Hydrated Carbonates
  (15.04)
  (15.04.07)
  
Nickel-Strunz
(10th edition) :
05.CC.20
  (05) Carbonates and Nitrates
  (05.C) Carbonates without Additional Anions, with H2O
  (05.CC) With rare earth elements (REE)
  
Crystal system: Orthorhombic System
Point group (H-M): mm2 — pyramidal
  
  
  
Other Properties: Gemstone Unlikely Available.

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