A Quantitative Discussion on Element Mass Migration in the Wunugetushan Porphyry Cu-Mo Deposit, Inner Mongolia
详细信息
- 责任者：Ai Jinbiao (Institute of Geophysical and Geochemical Exploration ; Chinese Academy of Geological Sciences ; Langfang 065000 ; China) ; Ma Shengming
- 刊名：Acta Geoscientica Sinica
- 出版年：2013
- 卷期：34(2)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 斑岩钼矿床 ; porphyry molybdenum deposit ; 内蒙古 ; Inner Mongolia
- 页码：p.193-202
- 图表：illus., 3 tables, 24 refs.
- 分类号：1001
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Element enrichment and depletion constitute the inherent objective regularity in the ore deposits. Previous studies mainly concentrated on discussions from the qualitative angle, whereas quantitative researches were insufficient. This paper made a tentative quantitative discussion on characteristics of the gains and losses of elements during their migration, through calculation based on the formula given by Grant, with the Wunugetushan porphyry ore deposit as an example. The results demonstrate that mass migration of different elements show certain regularity within the range of mineralized alteration. Compared with least-altered rocks, altered rocks are obviously enriched in Cu, Mo, Au, Ag, W, Sn, As, F, Hg, S and depleted in CaO, Na 2 O, TiO 2 , Zr, Ba, Sr, Rb and REE. The gains and losses of elements caused the element enrichment and depletion of the ore deposit and altered wall rock. The calculation thinking and method for element mass migration provide an available approach to geochemical exploration in the quantitative direction.