| Detrital and authigenic(?) baddeleyite (ZrO2) in ferromanganese nodules of Central Indian Ocean Basin |
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| 作者姓名： | Bibhuranjan Nayak Swapan Kumar Das Kalyan Kumar Bhattacharyya |
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| 作者单位： | CSIR National Metallurgical Laboratory, Jamshedpur 831007, India |
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| 基金项目： | the“CSIR-Young Scientist Award Project”（OLP-0103 of NML） sanctioned to B.Nayak by CSIR,New Delhi |
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| 摘 要： |
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| 关 键 词： | 铁锰结核 印度洋 碎屑 海盆 制备 矿物化学 好氧条件 陆源沉积物 |
| 收稿时间： | 26 March 2011 |
http://www.sciencedirect.com/science/article/pii/S1674987111000818 |
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| Bibhuranjan Nayak,Swapan Kumar Das,Kalyan Kumar Bhattacharyya.http://www.sciencedirect.com/science/article/pii/S1674987111000818[J].Geoscience Frontiers,2011,2(4):571-576. |
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| Authors: | Bibhuranjan Nayak Swapan Kumar Das Kalyan Kumar Bhattacharyya |
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| Institution: | CSIR National Metallurgical Laboratory, Jamshedpur 831007, India |
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| Abstract: | Occurrence of baddeleyite (ZrO2) which is a rare mineral has been recorded in ferromanganese
nodules of Central Indian Ocean Basin (CIOB). The mineral occurs either as independent isolated
sub-rounded to elliptical grains or in clusters forming fine subhedral crystals (<3 mm) within ferromanganese
concretionary growth bands. The mode of occurrence, textural features and chemistry of the
mineral suggest detrital and possibly an authigenic origin for baddeleyite. For authigenic origin it is
proposed that zirconium might have got released either from the terrigenous sediments or the altered
seafloor rocks forming halogen complexes and subsequently it has re-precipitated in the form of baddeleyite
within manganese nodules under oxic to sub-oxic conditions. |
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| Keywords: | Manganese nodule Baddeleyite Zirconium mobility Authigenic Indian Ocean |
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