Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina

Fil: Ministerio de Defensa. Dirección General de Fabricaciones Militares. Centro de Exploración Geológico Minero; Argentina.

Detalles Bibliográficos
Autor principal: Sillitoe, Richard H.
Formato: publishedVersion Informe técnico
Lenguaje:Español
Inglés
Publicado: Ministerio de Defensa. Dirección General de Fabricaciones Militares. Centro de Exploración Geológico-Minera 2024
Materias:
Campana Mahuida (Neuquén, Argentina)
Neuquén (Argentina)
Geología
cobre
silicato
mineralización
potasio
Acceso en línea:https://repositorio.segemar.gov.ar/handle/308849217/4428
Aporte de:
Repositorio Institucional del Servicio Geológico Minero Argentino (SEGEMAR) de Servicio Geológico Minero Argentino (SEGEMAR)
id I66-R172-308849217-4428
record_format dspace
spelling I66-R172-308849217-44282024-08-12T18:02:44Z Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina Sillitoe, Richard H. Campana Mahuida (Neuquén, Argentina) Neuquén (Argentina) Geología cobre silicato mineralización potasio Fil: Ministerio de Defensa. Dirección General de Fabricaciones Militares. Centro de Exploración Geológico Minero; Argentina. Fil: Naciones Unidas. Ministerio de Defensa. Dirección General de Fabricaciones Militares; Argentina. Fil: Richard H. Sillitoe. Naciones Unidas. Ministerio de Defensa. Dirección General de Fabricaciones Militares; Argentina. A geological appraisal of the Campana Mdnfida prospect in Neuquén Province, Argentina has resulted in the recognition of features characteristic of typical porphyry copper deposits. A zonal pattern of hydrothermal alteration—mineralization is centred on a series of small bodies and dykes of andesite porphyry. A core zone of potassium silicate alteration is fringed by a zone of sericitic alteration which passes outwards to propylitic alteration. Hypoqene copper grades in excess of 0.1 % Cu (and reaching 0.3 — 0.4 % Cu) are restricted to potassium silicate alteration and to the immediately adjacent parts of the sericitic zone. Within this area of highest hypogene copper grades, a supergene enrichment zone has formed because of the availability of copper during oxidation: extremely low hypogene copper grades outside this central area have inhibited the enrichment process. The highest—grade enriched ore occurs close to the centre of the potassium silicate zone where hypogene copper grades are highest. Although the orebody outlined at Campana Mahuida appears to be currently uneconomic, both the supergene enrichment blanket (about 40 million tons of 0.5 % Cu} and a larger tonnage of lower - grade hypogene ore within the potassium silicate zone should be considered as future reserves. Should it be decided to mine either of these ore types at a future date, then additional drilling, to a much greater depth in the case of the hypogene zone, will have to be undertaken. It is recommended that a reconnaissance geological examination of the remainder of the area surrounding the Cerros Tree Puntas - Pedreqoso pluton be carried out in the near future, with a View to “locating additional zones of hydrothermal alteration in the Mesozoic sedimentary sequence. 2024-04-12T12:12:20Z 2024-04-12T12:12:20Z 1973 info:eu-repo/semantics/publishedVersion info:ar-repo/semantics/informe técnico info:eu-repo/semantics/report Sillitoe, R.H. 1973. Geology of the Campana Mahuida porphyry copper prospect Neuquén Province Argentina. 15 pp. Salta, Dirección General de Fabricaciones Militares. https://repositorio.segemar.gov.ar/handle/308849217/4428 spa en info:eu-repo/semantics/openAccess application/pdf application/pdf image/png ARG Neuquén .......... (province) (World, South America, Argentina) 1001450 Tres Puntas, Cerro .......... (mountain) (World, South America, Chile, Antofagasta) 7275570 Ministerio de Defensa. Dirección General de Fabricaciones Militares. Centro de Exploración Geológico-Minera
institution Servicio Geológico Minero Argentino (SEGEMAR)
institution_str I-66
repository_str R-172
collection Repositorio Institucional del Servicio Geológico Minero Argentino (SEGEMAR)
language Español
Inglés
orig_language_str_mv spa
en
topic Campana Mahuida (Neuquén, Argentina)
Neuquén (Argentina)
Geología
cobre
silicato
mineralización
potasio
spellingShingle Campana Mahuida (Neuquén, Argentina)
Neuquén (Argentina)
Geología
cobre
silicato
mineralización
potasio
Sillitoe, Richard H.
Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina
topic_facet Campana Mahuida (Neuquén, Argentina)
Neuquén (Argentina)
Geología
cobre
silicato
mineralización
potasio
description Fil: Ministerio de Defensa. Dirección General de Fabricaciones Militares. Centro de Exploración Geológico Minero; Argentina.
format publishedVersion
Informe técnico
Informe técnico
author Sillitoe, Richard H.
author_facet Sillitoe, Richard H.
author_sort Sillitoe, Richard H.
title Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina
title_short Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina
title_full Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina
title_fullStr Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina
title_full_unstemmed Geology of the Campana Mahuida porphyry copper prospect, Neuquén Province, Argentina
title_sort geology of the campana mahuida porphyry copper prospect, neuquén province, argentina
publisher Ministerio de Defensa. Dirección General de Fabricaciones Militares. Centro de Exploración Geológico-Minera
publishDate 2024
url https://repositorio.segemar.gov.ar/handle/308849217/4428
work_keys_str_mv AT sillitoerichardh geologyofthecampanamahuidaporphyrycopperprospectneuquenprovinceargentina
_version_ 1809230278987612160

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