Zn/Cd ratios in calcsilicate-hosted sphalerite ores at Tumurtijn-ovoo, Mongolia

被引：79
作者：
Gottesmann, W.
Kampe, A.
机构：
[1] D-14612 Falkensee
[2] Germany (former Zentrales Geologisches Institut Berlin, D-10243 Berlin
来源：
CHEMIE DER ERDE-GEOCHEMISTRY | 2007年 / 67卷 / 04期
关键词：
spalerite ores; Zn/Cd ratios; source rocks; mobilization; Tumurtijn-ovoo; Mongolia;
D O I：
10.1016/j.chemer.2007.01.002
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：
As other calcsilicate-hosted ore deposits the Tumurtijn-ovoo Fe-Mn-Zn deposit is subdued to the question how the ore elements took place, whether linked to epigenetic silicification of a limestone host or bound to syngenetic precipitation during the deposition of a calcareous-siliceous sediment. The comparison of high Zn/Cd ratios of ores from Tumurtijn-ovoo ranging from 514 to 724 with those of other ore deposits relates Tumurtijn-ovoo to the group of submarine hydrothermal deposits which got their ore elements from basaltic source rocks by subseafloor leaching. Hence, respecting geological and textural features of the ores, a synsedimentary precipitation of zinc and cadmium in a volcano-sedimentary environment is suggested for Tumurtijn-ovoo. A group of low Zn/Cd ratios (274-297) is correlated with processes of mobilization and redeposition of sphalerite. (C) 2007 Elsevier GmbH. All rights reserved.
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页码：323 / 328
页数：6
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