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2006•Journal of East China Institute of TechnologyRequires access

REE Tracing on Ore-forming Fluid of 337 Uranium Ore Deposit in Xiazhuang orefield

Liang Liang

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Abstract

337 uranium ore deposit lies to the east of the Xiazhuang orefield,and there are structural fracture groups with EW,NNE-trending,diabase and syenite vein with NW-trending in the deposit region.The metal material mainly is pitchblende,various kinds of wall-rock alterations are developed in the region,especially alkali alterations.The characteristics of REE indicates that it belongs to shell source type,and the ratio of LREE to HREE is 3.25,Sm to Nd is 0.307 on average,and Ce to Yb is 7.127,which all prove the ore-forming fluid has deeper source.The ores deficits more REE,especially LREE than wall-rocks,and partition curve is flat,which is approximately nearby to that of the mantle-source diabase,especially syenite.But the negative uranium abnormality is more obvious than wall-rock,showing that the source of ore-forming fluid is mantle-source type.All above the characteristics illustrates that 337 ore deposit ore-forming fluid has the characteristics of mantle source.

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What this paper is about

337 uranium ore deposit lies to the east of the Xiazhuang orefield,and there are structural fracture groups with EW,NNE-trending,diabase and syenite vein with NW-trending in the deposit region.The metal material mainly is pitchblende,various kinds of wall-rock alterations are developed in the region,especially alkali alterations.The characteristics of REE indicates that it belongs to shell source type,and the ratio of LREE to HREE is 3.25,Sm to Nd is 0.307 on average,and Ce to Yb is 7.127,which all prove the ore-forming fluid has deeper source.The ores deficits more REE,especially LREE than wall-rocks,and partition curve is flat,which is approximately nearby to that of the mantle-source diabase,especially syenite.But the negative uranium abnormality is more obvious than wall-rock,showing that the source of ore-forming fluid is mantle-source type.All above the characteristics illustrates that 337 ore deposit ore-forming fluid has the characteristics of mantle source.

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Available abstract

337 uranium ore deposit lies to the east of the Xiazhuang orefield,and there are structural fracture groups with EW,NNE-trending,diabase and syenite vein with NW-trending in the deposit region.The metal material mainly is pitchblende,various kinds of wall-rock alterations are developed in the region,especially alkali alterations.The characteristics of REE indicates that it belongs to shell source type,and the ratio of LREE to HREE is 3.25,Sm to Nd is 0.307 on average,and Ce to Yb is 7.127,which all prove the ore-forming fluid has deeper source.The ores deficits more REE,especially LREE than wall-rocks,and partition curve is flat,which is approximately nearby to that of the mantle-source diabase,especially syenite.But the negative uranium abnormality is more obvious than wall-rock,showing that the source of ore-forming fluid is mantle-source type.All above the characteristics illustrates that 337 ore deposit ore-forming fluid has the characteristics of mantle source.

Key concepts: Geology, Mantle (geology), Geochemistry, Uranium ore, Uranium, Uraninite, Petrology, Metallurgy

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REE Tracing on Ore-forming Fluid of 337 Uranium Ore Deposit in Xiazhuang orefield — Research Paper | ScholarLens