J4 ›› 2011, Vol. 41 ›› Issue (5): 1397-1406.

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Significance and Characteristics |of |REE Geochemistry in Calcite in the Eastern Ore Belt of the Baiyangping Poly-Metallic Metallogenic Province, Northwestern Yunnan Province, China

FENG Cai-xia1, BI Xian-wu1, WU Li-yan1, ZOU Zhi-chao1,2, TANG Yong-yong1,2   

  1. 1.The State Key Laboratory of Ore Deposit Geochemistry/Institute of Geochemistry, Chinese Academy of Sciences, Guiyang550002, China
    2.Graduate School of Chinese Academy of Sciences, Beijing100049, China
  • Received:2011-01-12 Online:2011-09-26 Published:2011-09-26

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Abstract:

Calcite is a dominant gangue mineral in the eastern ore belt of Baiyangping poly-metallic metallogenic province. Geochemical characteristics of rare earth element (REE) of calcite from different ore bodies reveal that there are two types of REE distribution patterns: light rare earth element (LREE)-enriched and flat REE. The former represents that the REE behavior of calcite is that of inherited from pre-hydrothermal ore-forming hydrothermal features and the LREE was not apparently carried out during the mineralization process. The latter indicates that LREE was apparently brought out during the mineralization process; the REE content, relevant parameters and REE distribution patterns of calcite from different types of ore bodies change significantly, but they show continuous change tendency; combined with other isotope data and geological background of the mine, it is considered that ore-forming fluids were mainly hot brines and some mantle fluid participated in the ore forming process; The ore-forming conditions change from the reducing to oxidizing ones during the metallogenic process.

Key words: rare earth elements（REE）, geochemistry, calcite, the eastern ore belt of Baiyangping poly-metallic metallogenic province, northwestern Yunnan

CLC Number: 

  • P595
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