Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Joan Carles Melgarejo"'
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-13 (2021)
Isotopically light oxygen in mantle derived magmas is generally attributed to the occurrence of deeply subducted crustal material in the mantle. New analyses of olivine in kimberlites worldwide suggest that assimilation of lithospheric mantle during
Externí odkaz:
https://doaj.org/article/584e0c938ac44ad6a109f95cd763649a
Autor:
Yael Díaz-Acha, Marc Campeny, Lluís Casas, Roberta Di Febo, Jordi Ibañez-Insa, Tariq Jawhari, Josep Bosch, Ferran Borrell, Susana Esther Jorge-Villar, Jean-Marc Greneche, Esperança Tauler, Joan Carles Melgarejo
Publikováno v:
Minerals, Vol 12, Iss 3, p 368 (2022)
In the Neolithic Gavà mines, variscite and turquoise were exploited for ornaments manufacturing, although some prospective pits and tunnels were dug on other similar greenish minerals such as smectite or kandite. A 3D study of the distribution of mi
Externí odkaz:
https://doaj.org/article/ddfc7261da484dffb1a3ad10a67792a9
Autor:
Evanthia Tsantini, Takeshi Minami, Miguel Ángel Cau Ontiveros, Kazuya Takahashi, Joan Carles Melgarejo
Publikováno v:
Minerals, Vol 11, Iss 1, p 6 (2020)
Wall paintings in the Roman period were used to decorate both public and private spaces; therefore, they reflect, on the one hand, ideas and convictions, and on the other, daily activities and socio-economic models. Characterizations of the pigments
Externí odkaz:
https://doaj.org/article/c805bdf5885240f2ab689f57d710fe2d
Publikováno v:
Minerals, Vol 10, Iss 9, p 829 (2020)
We present the results of a detailed petrographic study of fresh coherent samples of the Menominee kimberlite sampled at site 73, located in Menominee County, MI, USA. Our objective is to account for its unusual and complex paragenetic sequence. Seve
Externí odkaz:
https://doaj.org/article/213aadd084dd4fb597848831d1b2e291
Autor:
Montgarri Castillo-Oliver, Joan Carles Melgarejo, Lisard Torró, Cristina Villanova-de-Benavent, Marc Campeny, Yael Díaz-Acha, Sandra Amores-Casals, Jingyao Xu, Joaquin Proenza, Esperança Tauler
Publikováno v:
Minerals, Vol 10, Iss 1, p 34 (2019)
The Eureka deposit in Castell-estaó in the Catalan Pyrenees is a Cu−U−V deposit, hosted by Triassic red-bed sandstones, and classified here as a low-temperature, sandstone-hosted stratabound metamorphite U deposit. The main mineralisation is str
Externí odkaz:
https://doaj.org/article/0fd23b7dfbd5428dbdb1d7db7274e892
Autor:
Lisard Torró, Malena Cazorla, Joan Carles Melgarejo, Antoni Camprubí, Marta Tarrés, Laura Gemmrich, Marc Campeny, David Artiaga, Belén Torres, Álvaro Martínez, Diva Mollinedo, Pura Alfonso, Osvaldo R. Arce-Burgoa
Publikováno v:
Minerals, Vol 9, Iss 10, p 604 (2019)
A volcanic dome complex of Miocene age hosts the In-bearing Ánimas–Chocaya–Siete Suyos district in SW Bolivia. Ore mineralization occurs as banded and massive infillings in sub-vertical, NE-SW striking veins. In this article, a detailed petrogra
Externí odkaz:
https://doaj.org/article/ff49f782b1d247d58c8b9523db012554
Autor:
Lisard Torró, Joan Carles Melgarejo, Laura Gemmrich, Diva Mollinedo, Malena Cazorla, Álvaro Martínez, Núria Pujol-Solà, Júlia Farré-de-Pablo, Antoni Camprubí, David Artiaga, Belén Torres, Pura Alfonso, Osvaldo Arce
Publikováno v:
Minerals, Vol 9, Iss 5, p 304 (2019)
The Huari Huari deposit, Potosí Department in SW Bolivia, hosts polymetallic stratiform and vein mineralization of Miocene age with significant concentrations of the critical metal indium (In). Vein mineralization records document early crystallizat
Externí odkaz:
https://doaj.org/article/6507e0b6f93241c6a39c60b9289ce96e
Publikováno v:
Minerals, Vol 9, Iss 2, p 113 (2019)
During the last thirty years, microstructural and technological studies on ceramic glazes have been essentially carried out through the use of Scanning Electron Microscopy (SEM) combined with energy dispersive X-ray analysis (EDX). On the contrary, o
Externí odkaz:
https://doaj.org/article/29cbc44b5ffb4555af0c412e916be05a
Publikováno v:
Minerals, Vol 2, Iss 4, Pp 318-337 (2012)
In this study, we compare the major- and trace-element compositions of olivine, garnet, and clinopyroxene that occur as single crystals (142 grains), with those derived from xenoliths (51 samples) from six kimberlites in the Lucapa area, northeastern
Externí odkaz:
https://doaj.org/article/797a65b2eceb4178b1d675b9cd0e58e3
Autor:
Núria Pujol-Solà, Joaquín A. Proenza, Antonio Garcia-Casco, José María González-Jiménez, Aleu Andreazini, Joan Carles Melgarejo, Fernando Gervilla
Publikováno v:
Minerals, Vol 8, Iss 10, p 433 (2018)
The origin of the assemblage of ultra-high pressure (UHP), super-reduced (SuR) and several crustally derived phases in ophiolitic chromitites is still hotly debated. In this paper, we report, for the first time, this assemblage of phases in ophioliti
Externí odkaz:
https://doaj.org/article/19787e0fc4344a669043430a93785a39