Geological Characteristics and Origin of the Qishan Ilmenite Deposit in Shandong Province

• 责任者：Li Hongkui (Geological Science College ; Shandong University of Science and Technology ; Qingdao 266510 ; China) ; Yu Xuefeng
• 刊名：Acta Geologica Sinica
• 出版年：2010
• 卷期：84(7)
• 关键词：钛铁矿 ; ilmenite ; 山东 ; Shandong Province
• 页码：p.1041-1048
• 图表：3 illus., 5 tables, 29 refs.
• 分类号：1001
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

Qishan ilmenite deposit in Juxian County is the first evaluated large-scale ilmenite deposit. It is located tectonically in the Gongdanshan uplift of the middle part of the Yishu fault belt. The primary rock and orebodies are brownish green, fine-grained titanium-bearing magnetite-amphibole pyroxene. Among the five bodies discovered, the No. I, II and III ore bodies were controlled in project. The No. 1 orebody is 1 600 m long, with an average of 180 m, a controlled depth of 204 m, and the average TiO₂ and TFe grades of 8.68% and 18.46%, respectively.  Based on study on its geological characteristics, it is proposed that this deposit belongs to magma differentiated ilmenite deposit at early period, which formed in the Paleoproterozoic era.