REE GEOCHEMICAL CHARACTERISTICS OF THE HANDAGAI SKARN-TYPE IRON-COPPER ORE BODY AND WALL ROCKS
TANG Shi-xin1, MA Sheng-ming1, ZHU Li-xin2, LI Jian-jun3
1. Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000, China;
2. Chinese Academy of Geological Sciences, Beijing 1000 37, China;
3. No. 519 Geological Party of North China Geological Exploration Bureau,Baoding 071051, China
Regarding host rocks and magmatic rocks as a whole system connected by ore fluid activity, the authors systematically investigated the REE behaviors of magmatic rocks, host-rocks and skarns influenced by ore-bearing fluid in the Handagai skarn-type Fe-Cu mineralization area. The REE compositions of Fe-Cu ores imply that they were derived from the contact metasomatism and the ore-forming hydrothermal fluid had relatively high temperature. The authors infer that the ore fluids should be characterized by ∑REE depletion and relative enrichment of ∑HREE and Ce. Results of the study indicate that the application of REE geochemistry to mineral prospecting has great potential.
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