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Alteration and Mineralization Types of the Laurani Porphyry Deposit in Central-Andean Metallogenic Belt, Bolivia 被引量:1
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作者 LIU Fei HAN Runsheng +1 位作者 WANG Jiasheng LI Wenyao 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第S1期220-221,共2页
1 Introduction The Laurani porphyry deposit is located in the Altiplano,an extensive North-South trending structural basin that formed in Central-Andean metallogenic belt,Bolivia.The Altiplano poly-metallic province c... 1 Introduction The Laurani porphyry deposit is located in the Altiplano,an extensive North-South trending structural basin that formed in Central-Andean metallogenic belt,Bolivia.The Altiplano poly-metallic province contains sub-volcanic ore 展开更多
关键词 alteration and Mineralization types of the Laurani Porphyry Deposit in Central-Andean Metallogenic Belt Bolivia
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BASIC TYPES AND MINERALIZATION OF PYROPHYLLITE DEPOSITS OF VOLCANIC GAS-LIOUID ALTERATION GENESIS
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《Geotectonica et Metallogenia》 1994年第Z2期116-117,共2页
关键词 GAS BASIC typeS AND MINERALIZATION OF PYROPHYLLITE DEPOSITS OF VOLCANIC GAS-LIOUID alteration GENESIS
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Deep gold mineralization features of Jiaojia metallogenic belt,Jiaodong gold Province:Based on the breakthrough of 3000 m exploration drilling 被引量:2
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作者 Xue-feng Yu Da-peng Li +7 位作者 Jing-xiang Tian De-ping Yang Wei Shan Ke Geng Yu-xin Xiong Nai-jie Chi Peng-fei Wei Peng-rui Liu 《China Geology》 2020年第3期385-401,共17页
Recently,continuous breakthroughs have been made about deep gold prospecting in the Jiaodong gold province area of China.Approximately 5000 t of cumulative gold resources have been explored in Jiaodong,which has thus ... Recently,continuous breakthroughs have been made about deep gold prospecting in the Jiaodong gold province area of China.Approximately 5000 t of cumulative gold resources have been explored in Jiaodong,which has thus become an internationally noteworthy gold ore cluster.The gold exploration depth has been increased to about 2000 m from the previous<1000 m.To further explore the mineralization potential of the Jiaodong area at a depth of about 3000 m,the Shandong Institute of Geological Sciences has drilled an exploratory drillhole named“Deep drillhole ZK01”to a depth of 3266 m.Hence,as reported herein,the mineralization characteristics of the Jiaojia metallogenic belt have been successfully documented.ZK01 is,to date,the deepest borehole with an gold intersect in China,and constitutes a significant advance in deep gold prospecting in China.The findings of this study further indicate that the depth interval of 2000 m to 4000 m below the ground surface in the Wuyi Village area incorporates 912 t of inferred gold resources,while the depth interval of 2000 m to 4000 m below the surface across the Jiaodong area possesses about 4000 t of inferred gold resources.The Jiaojia Fault Belt tends to gently dip downward,having dip angles of about 25°and about 20°at vertical depths of 2000 m and 2850 m,respectively.The deep part of the Jiaojia metallogenic belt differs from the shallow and moderately deep parts about fracturing,alteration,mineralization,and tectonic type.The deep zones can generally be categorized from inside outward as cataclastic granite,granitic cataclasite,weakly beresitized granitic cataclasite,beresitized cataclasite,and gouge.These zones exhibit a gradual transitional relation or occur alternately and repeatedly.The mineralization degree of the pyritized cataclastic granite-type ore in the deep part of the Jiaojia metallogenic belt is closely related to the degree of pyrite vein development;that is,the higher the pyrite content,the wider the veins and the higher the gold grade.Compared to the shallow gold ores,the deep-seated gold ores have higher fineness and contain joseite,tetradymite,and native bismuth,suggesting that the deep gold mineralization temperature is higher and that mantle-sourced material may have contributed to this mineralization.ZK01 has also revealed that the deep-seated ore bodies in the Jiaojia metallogenic belt are principally situated above the main fracture plane(gouge)and hosted within the Linglong Granite,contradicting previous findings indicating that the moderately shallow gold ore bodies are usually hosted in the contact zone between the Linglong Granite and Jiaodong Group or meta-gabbro.These new discoveries are particularly significant because they can help correct mineralization prospecting models,determine favorable positions for deep prospecting,and improve metallogenic prediction and resource potential evaluation. 展开更多
关键词 Au deposit alteration rock type Fracture zone 3000 m scientific drilling Deep mineral exploration engineering Jiaojia metallogenic belt Shandong Province China
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