The geochemical signature of rare-metal pegmatites in the Central Africa Region: Soils, plants, water and stream sediments in the Gatumba tin-tantalum mining district, Rwanda

被引：10

作者：

Nieder, Rolf ^{[1
]}

Weber, Tobias K. D. ^{[1
]}

Paulmann, Inga ^{[2
]}

Muwanga, Andrew ^{[3
]}

Owor, Michael ^{[3
]}

Naramabuye, Francois-X ^{[4
]}

Gakwerere, Francis ^{[5
]}

Biryabarema, Michael ^{[6
]}

Biester, Harald ^{[1
]}

Pohl, Walter ^{[7
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Geoecol, D-38106 Braunschweig, Germany

[2] Golder Associates GmbH, D-29227 Celle, Germany

[3] Makerere Univ, Dept Geol & Petr Studies, Kampala, Uganda

[4] Natl Univ Rwanda, Fac Agron, Butare, Rwanda

[5] Kigali Inst Educ, Kigali, Rwanda

[6] Rwanda Geol & Mines Author, Kigali, Rwanda

[7] Austrian Acad Sci, A-1010 Vienna, Austria

来源：

JOURNAL OF GEOCHEMICAL EXPLORATION | 2014年 / 144卷

关键词：

Coltan mining; Rare-metal pegmatites; Toxic elements; Mining impacts on the environment; Geochemical signature; EARLY KIDNEY DAMAGE; GRANITIC PEGMATITES; PHYTOREMEDIATION; METALLOGENY; BEHAVIOR; EXPOSURE; CADMIUM; WASTE;

D O I：

10.1016/j.gexplo.2014.01.025

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We studied trace elements in soils, plants, water and stream sediments in the Gisuma-Kibilira catchment of the Gatumba area of western Rwanda which has a long tradition of artisanal to small-scale tin-tantalum mining from rare-metal pegmatites. The geochemical fingerprint of soil, plant, water (springs and surface water in dry and rainy seasons) and stream sediment samples reveals elevated concentrations of Li, Rb, Cr, and Cs, but low As and U abundances at or below the global average. Trace element contents of soils and most plant materials are below internationally accepted guideline values. All water samples analyzed meet the World Health Organization (WHO) drinking water guidelines, and the stream sediments are below critical values of Dutch environmental standards. These data provide a baseline for environmental impact studies for rare-metal mining projects in the Central Africa Region. (c) 2014 Elsevier B.V. All rights reserved.

引用

页码：539 / 551

页数：13

共 1 条

[1] The geochemical signature of rare-metal pegmatites in Central Africa: Magmatic rocks in the Gatumba tin-tantalum mining district, Rwanda
Lehmann, Bernd
Halder, Stefan
Munana, Jean Ruzindana
Ngizimana, Jean de la Paix
Biryabarema, Michael
JOURNAL OF GEOCHEMICAL EXPLORATION, 2014, 144 : 528 - 538

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