| 残坡积土壤层中铁锰氧化物的吸附特性及其地球化学找矿意义 |
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| 作者单位： | Wuhan College of Geology，Wuhan 430074 |
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| 摘 要： | 作者用不同方法研究了粤北某铅锌矿区近矿灰岩风化土壤中铁锰氧化物对微量元素的富集作用。发现铁锰氧化物对Sb、Pb、Cd、Ni等元素具有强烈的吸附作用;对Zn、Cu等21种元素有程度不等的吸附;对Ti、Sr等12种元素不吸附。据此,作者认为在土壤地球化学找矿中,应着重在铁锰结核层和铁锰粘土层取样,或用编提取方法分析铁锰氧化物相的元素含量,强化异常,提高找矿效果。
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| 关 键 词： | 铁锰氧化物 吸附特性 地球化学找矿 偏提取 土壤 |
ABSORPTION CHARACTERISTICS OF Fe-Mn OXIDES IN RESIDUAL SOILS AND ITS SIGNIFICANCE IN GEOCHEMICAL PROSPECTING |
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| Authors: | Yang Chunhua |
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| Abstract: | Concentrations of 37 trace elements in Fe-Mn oxides from soils of weathered limestone near a lead-zinc deposit in north Guandong have been studied in various ways. It is found that the adsorption by Fe-Mn Oxides for Sb, Pb, Cd, Ni is very strong, for Zn, Cu, Co, Cr, Ba, Ag, Nb, V, Li, Be, Mo, Sm, Gd, Y, Yb, Sc, W, Dy, La, Nd weak and for Al, Ca, Mg, K, P, Ga, Ti, Sr, Th, Zr, Sn, Bi none. Based on these observations, sampling in Fe-Mn oxide nodules or Fe-Mn rich clay layers is recommended. Or alternatively, by use of partial extraction for Fe-Mn oxide phase, geochemical anomalies may be enhanced, and prospecting may be more effective. |
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| Keywords: | Fe-Mn oxides adsorption characteristics geochemical prospecting partial extraction soils |
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