English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/158306
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Abellaite, NaPb2(CO3)2(OH), a new supergene mineral from the Eureka mine, Lleida province, Catalonia, Spain

AutorIbáñez Insa, Jordi ; Elvira, Josep ; Llovet, X.; Perez-Cano, J.; Oriols, Núria; Busquets-Masó, Martí; Hernàndez, Sergi
Palabras claveAbellaite
Basic carbonate
Lead carbonate
Secondary mineral
Supergene mineral Uranium mine
Uranium mine
Fecha de publicaciónnov-2017
EditorSchweizerbart science publishers
CitaciónEuropean Journal of Mineralogy, 29(5): 915-922 (2017)
ResumenThe new mineral abellaite (IMA 2014-111), ideally NaPb2(CO3)2(OH), is a supergene mineral that was found in one of the galleries of the long-disused Eureka mine, in the southern Pyrenees (Lleida province), Catalonia, Spain. Abellaite is found as sparse coatings on the surface of the primary mineralization, it forms subhedral crystals not larger than 10 mm as well as larger pseudohexagonal platelets up to ∼30 μm. Individual crystals commonly have a tabular to lamellar habit and form fairly disordered aggregates. The mineral is associated with a large number of primary minerals (roscoelite, pyrite, uraninite, coffinite, 'carbon', galena, sphalerite, nickeloan cobaltite, covellite, tennantite and chalcopyrite) and supergene minerals (hydrozincite, aragonite, gordaite, As-rich vanadinite andersonite, čejkaite, malachite and devilline). Abellaite is colourless to white, with a vitreous to nacreous lustre. The mineral is translucent, has a white streak and is non-fluorescent. The aggregates of microcrystals are highly friable. The calculated density using the ideal formula is 5.93 g/cm3. The chemical composition of the mineral (the mean of 10 electron microprobe analyses) is - Na 3.88, Ca 0.29, Pb 72.03, C 4.17, O 19.47 and H 0.17, total 100.00 wt% (H, C and O by stoichiometry assuming the ideal formula). On the basis of 7 O atoms, the empirical formula of abellaite is Na0.96Ca0.04Pb1.98(CO3)2(OH). The simplified formula of the mineral is NaPb2(CO3)2(OH). The mineral is hexagonal, space group P63mc, a = 5.254(2), c = 13.450(5) Å, V= 321.5(2)Å3 and Z = 2. The strongest powder-diffraction lines [d in Å (I) (h k l)] are: 3.193 (100) (0 1 3), 2.627 (84) (1 1 0), 2.275 (29) (0 2 0), 2.242 (65) (0 2 1, 0 0 6), 2.029(95) (0 2 3). Abellaite has a known synthetic analogue, and the crystal structure of the mineral was refined by using crystallographic data of the synthetic phase. The mineral is named in honour of the mineralogist and gemmologist Joan Abella i Creus (b. 1968), who has long studied the deposits of the Eureka mine and who collected the mineral. © 2017 E. Schweizerbart'sche Verlagsbuchhandlung.
Versión del editorhttps://doi.org/10.1127/ejm/2017/0029-2630
URIhttp://hdl.handle.net/10261/158306
DOI10.1127/ejm/2017/0029-2630
ISSN0935-1221
E-ISSN1617-4011
Aparece en las colecciones: (ICTJA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Ibañez_Eur_J_Mineral_29_915_preprint.pdf1,39 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.