Mineral Information and Data:

Gobbinsite
Na5(Si11Al5)O32 • 11H2O [CNMNC approved formula]

Named for the locality: Gobbins area, County Antrim, Northern Ireland.

IMA status : Approved Species 1982 ()
CLASSIFICATION 
Dana
(8th edition) :
77.01.03.04  
  (77) Tectosilicate Zeolite group
  (77.01) true zeolites
  (77.01.03) Gismondine and related species
  
Nickel-Strunz
(10th edition) :
09.GC.05
  (09) Silicates
  (09.G) Tektosilicates with Zeolitic H2O
  (09.GC) Chains of doubly-connected 4-membered rings
  
Crystal system: Orthorhombic System
Point group (H-M): mm2 — pyramidal
  
  
  

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