Mineral Information and Data:

Piergorite-(Ce)
Ca8Ce2AlLiSi6B8O36(OH)2 [CNMNC approved formula]

Named as an acronym from the names of two Italian collectors that have provided us with the sample in study: Giancarlo PIERini and Pietro GORini.

IMA status : Approved Species 2005 ()
CLASSIFICATION 
Dana
(8th edition) :
54.02.02.07  
  (54) Nesosilicate Borosilicates and Some Beryllosilicates
  (54.02) with B in [4] coordination
  (54.02.02) Hellandite group
  
Nickel-Strunz
(10th edition) :
09.DL.10
  (09) Silicates
  (09.D) Inosilicates* Structural terminology per Liebau (1985)
  (09.DL) with 5-periodic double chains, Si10O28
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  
Comments: Radioactive.

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