Repositorio Institucional
Repositorio Institucional
CONICET Digital
  • Inicio
  • EXPLORAR
    • AUTORES
    • DISCIPLINAS
    • COMUNIDADES
  • Estadísticas
  • Novedades
    • Noticias
    • Boletines
  • Ayuda
    • General
    • Datos de investigación
  • Acerca de
    • CONICET Digital
    • Equipo
    • Red Federal
  • Contacto
JavaScript is disabled for your browser. Some features of this site may not work without it.
  • INFORMACIÓN GENERAL
  • RESUMEN
  • ESTADISTICAS
 
Artículo

Genesis of platinum-group minerals in the Las Aguilas mafic-ultramafic rocks, San Luis Province, Argentina: Textural, chemical and mineralogical evidence

Mogessie, A.; Hauzenberger, Ch. A.; Hoinkes, G.; Felfernig, A.; Stumpfl, E. F.; Bjerg, Ernesto AlfredoIcon ; Kostadinoff, JoseIcon
Fecha de publicación: 03/2000
Editorial: Springer Wien
Revista: Mineralogy and Petrology
ISSN: 0930-0708
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Meteorología y Ciencias Atmosféricas

Resumen

Palladium bismuthotellurides (merenskyite-michenerite-moncheite-melonite) of variable composition and platinum arsenides (sperrylite) are documented in several drill cores of the Las Aguilas mafic-ultramafic intrusion, San Luis province, central Argentina. The mafic-ultramafic rocks ranging in composition from harzburgite to dunite, Iherzolite, norite, and gabbro, intruded an amphibolite facies basement causing locally granulite facies metamorphism. The platinum - group minerals (PGM) identified in these rocks occur in (1) unaltered orthopyroxene-rich, plagioclase- and spinel-bearing rocks which carry abundant base-metal sulphides (BMS), such as chalcopyrite, pentlandite, and pyrrhotite; and in (2) serpentinized olivine-rich zones along cracks, but always associated with BMS, spinel, serpentine, and secondary magnetite. Textural evidence suggests a primary magmatic origin as well as late-stage hydrothermal remobilization, transport, and deposition of the PGM. Geophysical exploration and geological field work have delineated the extent of the Cu-Ni sulphide mineralization in the mafic-ultramafic intrusion underlain by a crystalline basement of Ordovician age. It is estimated that platinum-group-element (PGE) - enriched zones of several meters thickness could be present at depth in the mafic-ultramafic intrusion. Chondrite - normalised plots reveal that the ultramafic rocks have a similar PGE fractionation trend as the Bushveld and Stillwater layered complexes. This contrasts with the ophiolite-type ultramafic associations of the Sierras Pampeanas in Cordoba Province, which occur about 400 km to the northeast of the study area.
Palabras clave: Ordovician , Serpentin , Pyrrhotin , Secondary Magnetite
Ver el registro completo
 
Archivos asociados
Tamaño: 859.6Kb
Formato: PDF
.
Solicitar
Licencia
info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/77632
URL: https://link.springer.com/article/10.1007/s007100050005
DOI: http://dx.doi.org/10.1007/s007100050005
Colecciones
Articulos(INGEOSUR)
Articulos de INST.GEOLOGICO DEL SUR
Citación
Mogessie, A.; Hauzenberger, Ch. A.; Hoinkes, G.; Felfernig, A.; Stumpfl, E. F.; et al.; Genesis of platinum-group minerals in the Las Aguilas mafic-ultramafic rocks, San Luis Province, Argentina: Textural, chemical and mineralogical evidence; Springer Wien; Mineralogy and Petrology; 68; 1-3; 3-2000; 85-114
Compartir
Altmétricas
 

Enviar por e-mail
Separar cada destinatario (hasta 5) con punto y coma.
  • Facebook
  • X Conicet Digital
  • Instagram
  • YouTube
  • Sound Cloud
  • LinkedIn

Los contenidos del CONICET están licenciados bajo Creative Commons Reconocimiento 2.5 Argentina License

https://www.conicet.gov.ar/ - CONICET

Inicio

Explorar

  • Autores
  • Disciplinas
  • Comunidades

Estadísticas

Novedades

  • Noticias
  • Boletines

Ayuda

Acerca de

  • CONICET Digital
  • Equipo
  • Red Federal

Contacto

Godoy Cruz 2290 (C1425FQB) CABA – República Argentina – Tel: +5411 4899-5400 repositorio@conicet.gov.ar
TÉRMINOS Y CONDICIONES