Mineral Information and Data:

Goosecreekite
Ca(Si6Al2)O16 • 5H2O [CNMNC approved formula]

Named for the locality: In the Goose Creek quarry, Leesburg, Loudoun County, Virginia, USA.

IMA status : Approved Species 1980 ()
CLASSIFICATION 
Dana
(8th edition) :
77.01.07.03  
  (77) Tectosilicate Zeolite group
  (77.01) true zeolites
  (77.01.07) Brewsterite and related species
  
Nickel-Strunz
(10th edition) :
09.GB.25
  (09) Silicates
  (09.G) Tektosilicates with Zeolitic H2O
  (09.GB) Chains of single connected 4-membered rings
  
Crystal system: Monoclinic System
Point group (H-M): 2 — sphenoidal
  
  
  

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