The origin and hydrothermal mobilization of carbonaceous matter associated with Paleoproterozoic orogenic-type gold deposits of West Africa
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- 作者：Bohdan Kří ; beka ; bohdan.kribek@geology.cz" class="auth_mail" title="E-mail the corresponding author ; Ivana Sý ; korová ; b ; Vladimí ; r Machovičc ; Ilja Kné ; sla ; Franti&scaron ; ek Laufeka ; Jiří ; Zachariá ; &scaron ; d
- 关键词：Carbonaceous matter ; Graphite ; Gold deposits ; Paleoproterozoic ; West Africa
- 刊名：Precambrian Research
- 出版年：2015
- 出版时间：November 2015
- 年：2015
- 卷：270
- 期：Complete
- 页码：300-317
- 全文大小：8607 K
文摘
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Metamorphosed and hydrothermal carbonaceous matter (CM) identified in gold deposits.
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The isotopic composition of carbon in CM indicates its biogenic origin.
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Hydrothermal CM occurs solely in mineral assemblage with Au-bearing arsenopyrite.
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The Raman spectra show temperatures of CM formation between 280 and 440 °C.
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The temperatures of metamorphic and hydrothermal processes were basically the same.