New CO isotopic data on supergene minerals from the Skorpion and Rosh Pinah ore deposits (Namibia): Genetic and paleoclimatic constraints

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• 作者：G. Arfè ; ^a ; ^{giuseppe.arfe@unina.it} ; M. Boni^a ; ^{boni@unina.it} ; G. Balassone^a ; ^{balasson@unina.it} ; N. Mondillo^a ; ^{nicola.mondillo@unina.it} ; G. Hinder^b ; ^{gisela.hinder007@gmail.com} ; M. Joachimski^c ; ^{michael.joachimski@fau.de}
• 关键词：Namibia ; Skorpion ; Rosh Pinah ; Stable isotopes ; Paleoclimate ; Smithsonite ; Zn deposit
• 刊名：Journal of African Earth Sciences
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：126
• 期：Complete
• 页码：148-158
• 全文大小：2419 K
• 卷排序：126

文摘

Comparison between supergene carbonates of the Skorpion and the Rosh Pinah deposits. Carbon and oxygen isotope geochemistry applied to smithsonite, calcite and dolomite. Same smithsonite δ18O in both deposits: similar ore-forming fluids. Skorpion calcite and smithsonite formed in meteoric waters with comparable oxygen isotopic compositions. Different δ13C values in the two deposits speak for distinct C-origin.