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Piergorite-(Ce)

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Tre Croci, Vetralla, Vico Lake, Viterbo Province, Latium, Italy
© mslama

Show Piergorite-(Ce) Photos (10)



Formula:
Ca
 
8
(Ce,Th,La,Nd)
 
2
(Al
 
0.5
,Fe
3+
0.5
)(◻,Li,Be)
 
2
Si
 
6
B
 
8
O
 
36
(OH,F)
 
2
Name:After Giancarlo Pierini (b. 1929) and Pietro Gorini (b. 1939), two well-known and keen Italian mineral collectors, members of AMI (Italian Micromineralogical Association).
Acronym of "Pier"ini and "Gor"ini.
This page provides mineralogical data about Piergorite-(Ce).

Classification of Piergorite-(Ce)

IMA status:Approved 2005
Nickel-Strunz 10th (pending) edition ID:9.DL.10

9 : SILICATES (Germanates)
D : Inosilicates
L : Inosilicates with 5-periodic double chains, Si10O28
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Type Occurrence of Piergorite-(Ce)

Type Locality:Tre Croci, Vetralla, Vico Lake, Viterbo Province, Latium, Italy
Geological Setting of type material:extremely thin, platy micro crystals and aggregates perched within small seams in a volcanic ejecta.

Chemical Properties of Piergorite-(Ce)

Formula:
Ca
 
8
(Ce,Th,La,Nd)
 
2
(Al
 
0.5
,Fe
3+
0.5
)(◻,Li,Be)
 
2
Si
 
6
B
 
8
O
 
36
(OH,F)
 
2
All elements listed in formula:Al, B, Be, Ca, Ce, F, Fe, H, La, Li, Nd, O, Si, Th

Relationship of Piergorite-(Ce) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DL.05Inesite
Ca
 
2
(Mn,Fe)
 
7
Si
 
10
O
 
28
(OH)
 
2
 · 5H
 
2
O

Other Names for Piergorite-(Ce)

Synonyms:
IMA2005-008
Other Languages:
German:Piergorit-(Ce)

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Piergorite-(Ce)

Reference List:

- +
Boiocchi, M., Callegari, A., Ottolini, L. (2006): The crystal structure of piergorite-(Ce), Ca8Ce2(Al0.5Fe3+0.5)Σ1(,Li,Be)2Si6B8O36(OH,F)2: A new borosilicate from Vetralla, Italy, with a modified hellandite-type chain. American Mineralogist, 91, 1170-1177.

Ciriotti, M.E. & Bonacina, E. (2007): Alloriite e piergorite-(Ce): tre AMIci per due nuove specie italiane. Micro (sistematica), 2/2007, 35-50.

Internet Links for Piergorite-(Ce)

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    • Localities for Piergorite-(Ce)

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Latium
      • Viterbo Province
        • Vico Lake
          • Vetralla
    		American Mineralogist, Volume 91, pages 1170–-1177, 2006
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