Mineral Information and Data:

Stellerite
Ca4(Si28Al8)O72 • 28H2O [CNMNC approved formula]

Named after Georg Wilhelm Steller (1709-1746), German explorer, zoologist and the discoverer of the Komandor Islands.

IMA status : Approved Species 1999 ()
CLASSIFICATION 
Dana
(8th edition) :
77.01.04.04  
  (77) Tectosilicate Zeolite group
  (77.01) true zeolites
  (77.01.04) Heulandite and related species
  
Nickel-Strunz
(10th edition) :
09.GE.15
  (09) Silicates
  (09.G) Tektosilicates with Zeolitic H2O
  (09.GE) Chains of T10O20 Tetrahedra
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  
Other Properties: Gemstone Extremely Rare.

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