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Boisséjour, Ceyrat, Clermont-Ferrand, Puy-de-Dôme, Auvergne, France

Portlandite
Boisséjour, Ceyrat, Clermont-Ferrand, Puy-de-Dôme, Auvergne, France

Photo: P.Queneau
Latitude: 45°44'53"N
Longitude: 3°4'15"E
Long abandoned quarry at the crossing of RN 89 and N 141 c roads. Other samples have been found above the quarry during housing construction. Part of a private property and now inaccessible.
Oligocene marls and arkoses thermally metamorphosed by trachy-basalt lava flow of Puy de Gravenoire volcano.

References

- Grünhagen H and Mergoil J (1963) Découverte d'hydrocalumite et afwillite associées à l'ettringite dans les porcélanites de Boisséjour près Ceyrat (Puy de Dôme). Bulletin de la Société Française de Minéralogie et de Cristallographie 86: 149-157.
- Revel, C. (1996). "La carrière de Boisséjour." Magazine du 4M, 16(162), 4-5.

Mineral List

Afwillite
Calcite
Ettringite
'Gismondine'
Hydrocalumite
Jennite
Portlandite
Strätlingite
Tobermorite


9 entries listed. 8 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 20th Jun 2011 22:03:41
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