Study on Characteristics and Genesis of the Laobin Iron Deposit in Tashikuergan, Inner Xinjiang
详细信息
- 责任者：Rao Dongping (Southeast Geological Survey Branch ; Zijin Mining Group ; Shanghang 364200 ; China) ; Cao Xinzhi
- 刊名：Xinjiang Geology
- 出版年：2013
- 卷期：31(3)
- 关键词：铁矿 ; iron ores ; 新疆 ; Xinjiang
- 页码：p.190-195
- 图表：7 illus., 3 tables, 21 refs.
- 分类号：1001
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
The Laobing iron deposit is located in the TaAXi to TaTuLuGou iron copper vanadium metallogenic belt of Tashikuergan in the west Kunlun to Kala Kunlun orogenic belt.The ore bodies occurred in plagioclase-hornblende schist and biotite-quartz schist of Palaeoproterozoic Bulunkuole group with lamellar and near-bedded or lenticular shapes,and showed Gradual transition,synchronous fold and interbedded output with roof and floor of surrounding rock.The REE contents of Laobing deposit are low,showing characteristics of early Precambrian ocean chemical deposition.In the PAAS-normalized REE pattern,LREE are depleted and HREE are enriched relatively,with strong Eu and La positive anomaly and no visible Ce anomaly,indicates that iron ore formation is closely related with submarine volcanic activity,and the deposit characteristics are similar with Algoma iron ore.Magnetite oxygen isotopes delta18O value distribute in 3.3 ~ 4.6‰irange,shows mainly magnetites are original sedimentary magnetite magnetite.Combine the ore-forming geological background and ore deposit geology characteristics,considers the genesis of Laobing iron deposit belongs to the submarine volcano sedimentary-metamorphism.
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