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The effect of hydrothermal alteration on the Sr and Nd isotopic signatures of the Barra do Itapirapua Carbonatite, Southern Brazil
(Univ Chicago Press, 1999-03-01)
The Cretaceous Barra do Itapirapua carbonatite in southern Brazil experienced extensive postmagmatic hydrothermal alteration. In this article, Sr and Nd isotope ratios of coexisting samples of hydrothermally overprinted ...
Hydrothermal rare earth elements mineralization in the Barra do Itapirapua carbonatite, southern Brazil: behaviour of selected trace elements and stable isotopes (C, O)
(Elsevier B.V., 1999-03-01)
The Bura do Itapira pua carbonatite is located in southern Brazil and belongs to the Cretaceous Ponta Grossa alkaline-carbonatitic province related to the opening of the South Atlantic. The carbonatite complex is emplaced ...
Hydrothermal rare earth elements mineralization in the Barra do Itapirapua carbonatite, southern Brazil: behaviour of selected trace elements and stable isotopes (C, O)
(Elsevier B.V., 1999-03-01)
The Bura do Itapira pua carbonatite is located in southern Brazil and belongs to the Cretaceous Ponta Grossa alkaline-carbonatitic province related to the opening of the South Atlantic. The carbonatite complex is emplaced ...
Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
(E Schweizerbartsche Verlags, 2007-12-29)
New outcrops of hydrothermal clay alterations, associated with the Late Proterozoic unconformity between the migmatitic basement and sedimentary quartzitic sandstone sequence, were found near small iron (goethite and ...
Magnetic properties related to hydrothermal alteration processes at the Escondida porphyry copper deposit, northern Chile.
(2014)
Fluid–rock interaction related to the circulation of hydrothermal fluids can strongly modify the physicochemical properties of wall rocks in porphyry Cu deposits. These processes can also produce compositional and textural ...
The hydrothermal alteration of the cordón de inacaliri volcanic complex in the framework of the hidden geothermal systems within the pabelloncito graben (Northern Chile)
(MDPI, 2021)
Detailed mineralogical analyses in areas with surface hydrothermal alteration zones associated with recent volcanism (< 1 Ma) in the Central Andean Volcanic Zone could provide key information to unravel the presence of ...
Geochemistry of Hydrothermal Alteration in Volcanic Rocks
(IntechOpen, 2012)
Minerals where a hydrothermal fluid delivers the chemical reactants and removes the aqueous reaction products. An understanding of hydrothermal alteration is of value because it provides insights into the chemical attributes ...
THE SÃO GERALDO DO ARAGUAIA OPAL DEPOSIT, PARÁ, BRAZILTHE SÃO GERALDO DO ARAGUAIA OPAL DEPOSIT, PARÁ, BRAZIL
(Sociedade Brasileira de Geologia, 2017)