Upgrading iron-ore deposits by melt loss during granulite facies metamorphism
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- 作者：Laura J. Morrisseya ; laura.morrissey@adelaide.edu.au" class="auth_mail" title="E-mail the corresponding author ; Martin Handa ; Kathleen Lanea ; David E. Kelseya ; Rian A. Dutcha ; b
- 关键词：THERMOCALC ; Magnetite ; Iron ore ; Melt loss ; Partial melting ; Pseudosection
- 刊名：Ore Geology Reviews
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：74
- 期：Complete
- 页码：101-121
- 全文大小：6754 K
文摘
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Melt loss and metamorphism is a mechanism to concentrate magnetite and hematite in the residual rock package.
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The specific degree of enrichment is controlled by the melt fertility of the rock.
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The concentration of Fe-oxides may increase by > 35 % in fertile, muscovite-rich horizons as a result of melt loss.
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Upgrading of these sub-economic horizons adds to the overall grade of the ore system.