Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Nilson F. Botelho"'
Publikováno v:
Minerals, Vol 14, Iss 9, p 895 (2024)
This study focuses on the relationship between U and pyrochlore in the world-class Sn-Nb-Ta (U, Th, REE, Li) Madeira deposit within the Pitinga mining district of northern Brazil. The primary U mineralization is of intrusive-type and early magmatic o
Externí odkaz:
https://doaj.org/article/c6e8297fa9f54c1589c313738ce97a62
Publikováno v:
Minerals, Vol 8, Iss 9, p 396 (2018)
Economic and subeconomic concentrations of Sn, In, rare earth elements (REE), Ta, and Nb are known in Central Brazil, in the Goias Tin Province. The Sn-P enriched albitites studied in this paper occur in sharp contact with peraluminous granites of th
Externí odkaz:
https://doaj.org/article/976595ee02274b72b8be4ec57b7f0701
Autor:
MÁRCIO M. PIMENTEL, NILSON F. BOTELHO
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 73, Iss 2, Pp 263-276 (2001)
Supracrustal rocks of the Araí Group, together with coeval A-type granites represent a ca. 1.77-1.58 Ga old continental rift in Brazil. Two granite families are identified: the older (1.77 Ga) group forms small undeformed plutons, and the younger gr
Externí odkaz:
https://doaj.org/article/8139117e59664709839598e3e9667fba
Autor:
Igor V. Santana, Nilson F. Botelho
Publikováno v:
Ore Geology Reviews. 143:104751
Autor:
R. Leonardo Santacruz, Stewart D. Redwood, Alessandro Cecchi, Massimo Matteini, Nilson F. Botelho, Julian Ceballos, Tony Starling, Juan C. Molano
Publikováno v:
Ore Geology Reviews. 141:104542
Autor:
Nilson F. Botelho, Timothy Liverton
Publikováno v:
Journal of Asian Earth Sciences. 19:399-412
Two suites of tin-related alkaline granites are compared: the Seagull–Thirtymile granites of the Yukon, which were emplaced in a cordilleran setting and the Parana suite of Goias, which were emplaced in an incipient rift environment. The geochemist
Publikováno v:
Revista Brasileira de Geociências. 22:61-72