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Perbøeite-(Ce)

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Formula:
(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
System:
Monoclinic
Colour:
Grayish-green to very ...
Name:
Named after the Norwegian mineralogist Per Bøe, Tromsø University.
Member of a polysomatic series having epidote and törnebohmite as end-members.
Form a continuous solid-solution series with alnaperbøeite-(Ce). Members of the perbøeite-(Ce)–alnaperbøeite-(Ce) solid solution are topologically identical to the minerals gatelite-(Ce) and västmanlandite-(Ce). Perbøeite-(Ce) derives from gatelite-(Ce) by the homovalent substitution [M3Fe2+ → M3Mg].

Both perbøeite-(Ce) and alnaperbøeite-(Ce) may be present in a singel crystal, and the two cannot be distinguished visually.


Classification of Perbøeite-(Ce)

Approved 2011
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http://www.mindat.org/min-42352.html
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First Recorded Occurrence of Perbøeite-(Ce)

General Appearance of First Recorded Material:
Gatelite-like crystals, some intimately inter- or overgrown by törnebohmite-(Ce)
Place of Conservation of First Recorded Material:
Museo di Storia Naturale, Universita`degli. Studi di Firenze, Firenze, Italy, catalogue number 3110/I
Geological Setting of First Recorded Material:
In yttrian fluorite from pegmatites of the Tysfjord granite, Norway.
Associated Minerals at First Recorded Locality:

Physical Properties of Perbøeite-(Ce)

Colour:
Grayish-green to very pale green

Crystallography of Perbøeite-(Ce)

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 8.9277(6) Å, b = 5.6548(6) Å, c = 17.587(1) Å
β = 116.475(8)°
Ratio:
a:b:c = 1.579 : 1 : 3.11
Unit Cell Volume:
V 794.8 ų
Morphology:
Sub- to euhedral Gatelite-like crystals, up to 400 μm in size.
X-Ray Powder Diffraction Data:
d-spacingIntensity
15.7(75)
4.62(30)
3.489(40)
2.971(100)
2.828(50)
2.739(30)
2.619(60)
2.140(25)

Chemical Properties of Perbøeite-(Ce)

Formula:
(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Essential elements:
All elements listed in formula:
Empirical Formula:
(Ca1.00Mn0.03Na0.08La0.51 Ce1.30Pr0.16Nd0.62Sm0.10Gd0.06Dy0.03Er0.01Y0.06Th0.01)∑3.97 (Al3.21Fe2+0.79)∑4.00Si5.01O20(OH)2

Other Names for Perbøeite-(Ce)

Name in Other Languages:

Other Information

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

References for Perbøeite-(Ce)

Reference List:
Bonazzi, P., Bindi, L., Chopin, C., Husdal, T.A. and Lepore, G.O. (2011): IMA 2011-055. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75, 2887-2893

Bonazzi, P., Lepore, G.O., Bindi, L.. Chopin, C., Husdal, T.A. & Medenbach, O. (2014): Perbøeite-(Ce) and alnaperbøeite-(Ce), two new members of the epidote-törnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member. American Mineralogist. 99, 157-169

Internet Links for Perbøeite-(Ce)

Localities for Perbøeite-(Ce)

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Norway
 
  • Nordland
    • Tysfjord
      • Drag
        • Eivollen
Bonazzi, P., Bindi, L., Chopin, C., Husdal, T.A. and Lepore, G.O. (2011): IMA 2011-055. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75, 2887-2893; Bonazzi, P., Lepore, G.O., Bindi, L.. Chopin, C., Husdal, T.A. & Medenbach, O. (2014): Perbøeite-(Ce) and alnaperbøeite-(Ce), two new members of the epidote-törnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member. American Mineralogist. 99, 157-169
Bonazzi, P., Bindi, L., Chopin, C., Husdal, T.A. and Lepore, G.O. (2011): IMA 2011-055. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75, 2887-2893; Bonazzi, P., Lepore, G.O., Bindi, L.. Chopin, C., Husdal, T.A. & Medenbach, O. (2014): Perbøeite-(Ce) and alnaperbøeite-(Ce), two new members of the epidote-törnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member. American Mineralogist. 99, 157-169
Bonazzi, P., Bindi, L., Chopin, C., Husdal, T.A. and Lepore, G.O. (2011): IMA 2011-055. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75, 2887-2893 ; Bonazzi, P., Lepore, G.O., Bindi, L.. Chopin, C., Husdal, T.A. & Medenbach, O. (2014): Perbøeite-(Ce) and alnaperbøeite-(Ce), two new members of the epidote-törnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member. American Mineralogist. 99, 157-169
USA
 
  • Colorado
    • Boulder Co.
      • Jamestown District
        • Jamestown
Pavel M. Kartashov analytical data (2014), Philip Persson material
Mineral and/or Locality  
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