Skip to Main content Skip to Navigation
Journal articles

Possible use of Si-Phytoliths in metal anomaly prospection. Example from Riacho dos Machado region, Cerrado, Minas Gerais, Brazil.

Abstract : This work investigates the distribution of selected heavy elements in soil samples and Si-Phytoliths from plants. The aim is to verify if metal contents are indicative for metal anomalies in the soil. Samples were collected in profiles near the Riacho dos Machados Goldmine. Granitic-gneissic rocks, in tectonized contact with the overlaying rocks, form the basis of the investigated region, which belongs to the Rio dos Machados Group of the Espinhaço Super Group. The whole rock substrate is covered by lateritic to arenitic soils with different exposure depths. Metal-rich fluid invaded this unit, forming metal anomalies, forming Zn-Pb-Au deposits, like that of Salobre-Porteirinha. After appropriate preparation, the samples were analyzed by ICP-OES (Si-Phytoliths) and XRF (soil). Anomalies in the investigated profile are indicated by high metal contents in the Si-Phytoliths of the selected species. Using different species, the metal concentration at different depths can be determined.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01426381
Contributor : Andrée-Aimée Toucas <>
Submitted on : Wednesday, January 4, 2017 - 2:33:15 PM
Last modification on : Thursday, April 30, 2020 - 10:26:04 AM

Identifiers

  • HAL Id : hal-01426381, version 1

Citation

Heloiza Márcia Fernandes-Horn, Adolf Heinrich Horn, Regynaldo Arrudas Sampaio, Hernando Baggio, Marcio Neves Rodrigues, et al.. Possible use of Si-Phytoliths in metal anomaly prospection. Example from Riacho dos Machado region, Cerrado, Minas Gerais, Brazil.. Romanian Journal of Mineral Deposits, Bucharest: Geological Institute of Romania, 2016, 89 (1-2), pp.41-44. ⟨hal-01426381⟩

Share

Metrics

Record views

354