Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Jean-Jacques Trescases"'
Publikováno v:
Economic Geology. 85:1010-1023
Two typical lateritic weathering profiles (Jacuba ahd Angiquinho) from the Niquelandia Ni deposits, Brazil, were studied in order to establish the petrological relationship between the supergene Ni products and the parental pyroxenes. Frbm the base t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::617ba134d606ea354dc7a21aacb2658e
https://doi.org/10.2113/gsecongeo.85.5.1010
https://doi.org/10.2113/gsecongeo.85.5.1010
Autor:
Jean-Jacques Trescases
Publikováno v:
Soils and Sediments ISBN: 9783642644436
Nickel belongs to the transition metal family and shows close chemical similarities with Fe and Co. Even more than these elements, it is concentrated in silicated Fe-Mg minerals by octahedral substitution with Fe2+ ions. Thus, the mean mineral/ matri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3de5141a85e0337e224030bd7895328a
https://doi.org/10.1007/978-3-642-60525-3_6
https://doi.org/10.1007/978-3-642-60525-3_6
Autor:
Jean-Claude Parisot, Jean Jacques Trescases, M.C. Toledo-Groke, Monique Creach, Daniel Nahon, Adolpho José Melfi
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Geochemical and mineralogical studies carried out on weathered material at three cupriferous deposits (Chapada Grande - Goias, Salobo 3A - Para and Santa Blandina - Sao Paulo) 100 to verify copper behavior in lateritic weathering profiles. It has bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::206fc7d131526891bd4ad0bd4eea2232
Autor:
Jean-Jacques Trescases
Publikováno v:
Sciences Géologiques. Bulletin. 32:181-188
Die Verwitterung unter tropischen Bedingungen bewirkt die Bildung von «Nickel Latenten» auf ultrabasischen Gesteinen (0,1 bis 0,4 % NiO). Diese Verwitterung greift nach und nach die beiden Hauptminerale dieser Gesteine an : Peridotit Einsprenlinge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a114db182fde44f402294a54a2d718e4
https://doi.org/10.3406/sgeol.1979.1564
https://doi.org/10.3406/sgeol.1979.1564
Publikováno v:
Economic Geology. 84:1340-1362
The Au-As-Sb deposits from the Marche-Combrailles (northwestern part of the French Massif Central district) are spatially associated to the Marche-Combrailles shear zone. Host rocks are either Visean volcano-sedimentary tuffs or formations of the Pal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24375018eea10b938a6800c1f30a0f86
https://doi.org/10.2113/gsecongeo.84.5.1340
https://doi.org/10.2113/gsecongeo.84.5.1340
Autor:
Jean-Jacques Trescases
Publikováno v:
Bulletin du Service de la carte géologique d'Alsace et de Lorraine. 22:329-354
Die Abflusswässer der Peridotite von Neukaledonien sind bikarbonat-, magnesium-und kieselsäurehaltig. Das Freiwerden von Magnesium wird, im Gegensatz zu dem der Kieselsäure, nur in geringem Mass durch die Stärke des Abflusses bestimmt. Die Berech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8596b86133435b9112ce8ac19755b8db
https://doi.org/10.3406/sgeol.1969.1361
https://doi.org/10.3406/sgeol.1969.1361
Publikováno v:
Mineralium Deposita. 22
At Azul (state of Para, Brazil) the lateritic weathering of organic shales with rhodochrosite and phyllosilicates (mainly muscovite) has led to one of the largest maganese deposits of Brazil (45 Mt of reserves with 42.65% Mn). The oxidation of the rh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d5d37d95deb81ebb8dae44506b58c29
https://doi.org/10.1007/bf00204689
https://doi.org/10.1007/bf00204689
Publikováno v:
The Chemistry of Weathering ISBN: 9789401088558
Scopus-Elsevier
Scopus-Elsevier
Laterite profiles developed on manganiferous metamorphic rocks in the Ziemougoula area (North West Ivory Coast) permit the observation of chemical weathering of tephroites, manganocalci tes, chlorites and spessartite garnets. Several stages are obser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ff1731f43ebee0f12d7081bb3551097
https://doi.org/10.1007/978-94-009-5333-8_16
https://doi.org/10.1007/978-94-009-5333-8_16
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A presente dissertação de Mestrado é resultado do trabalho de pesquisa realizado na região de Pién, sul do Estado do Paraná, como parte do Projeto Níquel-Ultrabásicas, instalado no Instituto de Geociências da Universidade de São Paulo, e qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48105efd5224aac94e7181d53d28be43
https://doi.org/10.11606/d.44.2016.tde-21072016-152100
https://doi.org/10.11606/d.44.2016.tde-21072016-152100