1. Biogeochemical behavior of Ampelozizyphus amazonicus Ducke in the Pitinga mining district, Amazon, Brazil
- Author
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M. C. Lima e Cunha, Vitor Paulo Pereira, Egydio Menegotto, A. C. Bastos Neto, Milton Luiz Laquintinie Formoso, and Laura Leismann de Oliveira
- Subjects
Ampelozizyphus ,geography ,Biogeochemical cycle ,geography.geographical_feature_category ,biology ,Amazon rainforest ,General Engineering ,Geochemistry ,Pyroclastic rock ,Mineralogy ,Vegetation ,engineering.material ,biology.organism_classification ,Volcanic rock ,Earth and Planetary Sciences (miscellaneous) ,Laterite ,engineering ,General Earth and Planetary Sciences ,Environmental Chemistry ,Paragenesis ,Geology ,General Environmental Science ,Water Science and Technology - Abstract
The vegetal species Ampelozizyphus amazonicus Ducke (Rhamnaceae Family) was chosen as a sampling medium for the lateritic surfaces of the Pitinga Mine in the Amazon region, in order to study the biogeochemical behavior of this species and compare it with the chemical composition of a reference plant. The Pitinga mining district is one of the largest producers of tin in the world. This district contains unique deposits of cryolite and rare metals such as Zr, Nb, Ta, Y and REEs related to granitic bodies that intrude into the volcanic and acid pyroclastic rocks. The results showed that the species A. amazonicus predominantly concentrates significant levels of Zr, Nb, Ta, Th, Be, Sc over U, Hf, Ga and In. These elements are characteristic of the mineral paragenesis for the region, suggesting that this plant can provide a representative sampling medium future geochemical exploration programs in the region.
- Published
- 2007
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