Described in this paper are the fundamental characteristics of mineralization of gold ores in the Sandu-Danzhai Hg-Sb-As-An ore belt of Guizhou Province. Through systematic sampling of the industrial orebody and alter...Described in this paper are the fundamental characteristics of mineralization of gold ores in the Sandu-Danzhai Hg-Sb-As-An ore belt of Guizhou Province. Through systematic sampling of the industrial orebody and alteration zone, the total amount of the rare-earth ele-ments, that of the light rare-earth elements, Eu depletion and other parameters are clarified.There have been distinguished two types of REE distribution patterns: the "clay type" and the "quartz type". High-grade orebodies are closely related with silicification, illitization and pyriti-zation. The seven-component diagram of the REEs of even numbers in the periodic table (Bal-asov, 1966) is capable of distinguishing ore-bearing from ore-barren deposits.展开更多
某石英型萤石矿CaF_(2)含量45.684%,通过选矿实验确定了选别该矿石的工艺流程和药剂制度,提供了相关工艺参数和技术指标。磨矿细度为-0.074 mm 90%,用碳酸钠作调整剂,JK-3和水玻璃作组合抑制剂,YP-2作捕收剂,采用一粗五精一扫,精Ⅰ尾和...某石英型萤石矿CaF_(2)含量45.684%,通过选矿实验确定了选别该矿石的工艺流程和药剂制度,提供了相关工艺参数和技术指标。磨矿细度为-0.074 mm 90%,用碳酸钠作调整剂,JK-3和水玻璃作组合抑制剂,YP-2作捕收剂,采用一粗五精一扫,精Ⅰ尾和扫Ⅰ精再选,中矿合并返回的闭路工艺,精矿CaF_(2)品位为97.682%,回收率为91.87%。实验结果表明矿石中的主要有价矿物萤石得到了充分的回收,产品质量较高,指标较为理想,为选矿设计提供了科学依据。展开更多
The Dongping gold deposit, situated on the northern margin of the North China Platform, is a composite deposit composed of auriferous quartz vein-type and altered rock-type ore bodies. It is hosted in the inner contac...The Dongping gold deposit, situated on the northern margin of the North China Platform, is a composite deposit composed of auriferous quartz vein-type and altered rock-type ore bodies. It is hosted in the inner contact zone of an alkaline intrusion which was intruded into Archean metamorphic rocks and was formed not later than the Hercynian peried. Auriferous quartz veins of the deposit are dated with the fluid inclusion Rb-Sr isochron method at 103 ±4Ma, indicating that the gold deposit was formed in the Yenshanian period. 87Sr/86Sr sourcetracing shows the ore-forming materials came dominantly from alkaline intrusions. These results, combined with other isotope and REE data, suggest that the Dengping gold deposit is not a traditional magmatic hydrothermal deposit, but a reworked hydrothermal deposit related to heated and evoved meteoric water.展开更多
文摘Described in this paper are the fundamental characteristics of mineralization of gold ores in the Sandu-Danzhai Hg-Sb-As-An ore belt of Guizhou Province. Through systematic sampling of the industrial orebody and alteration zone, the total amount of the rare-earth ele-ments, that of the light rare-earth elements, Eu depletion and other parameters are clarified.There have been distinguished two types of REE distribution patterns: the "clay type" and the "quartz type". High-grade orebodies are closely related with silicification, illitization and pyriti-zation. The seven-component diagram of the REEs of even numbers in the periodic table (Bal-asov, 1966) is capable of distinguishing ore-bearing from ore-barren deposits.
文摘某石英型萤石矿CaF_(2)含量45.684%,通过选矿实验确定了选别该矿石的工艺流程和药剂制度,提供了相关工艺参数和技术指标。磨矿细度为-0.074 mm 90%,用碳酸钠作调整剂,JK-3和水玻璃作组合抑制剂,YP-2作捕收剂,采用一粗五精一扫,精Ⅰ尾和扫Ⅰ精再选,中矿合并返回的闭路工艺,精矿CaF_(2)品位为97.682%,回收率为91.87%。实验结果表明矿石中的主要有价矿物萤石得到了充分的回收,产品质量较高,指标较为理想,为选矿设计提供了科学依据。
文摘The Dongping gold deposit, situated on the northern margin of the North China Platform, is a composite deposit composed of auriferous quartz vein-type and altered rock-type ore bodies. It is hosted in the inner contact zone of an alkaline intrusion which was intruded into Archean metamorphic rocks and was formed not later than the Hercynian peried. Auriferous quartz veins of the deposit are dated with the fluid inclusion Rb-Sr isochron method at 103 ±4Ma, indicating that the gold deposit was formed in the Yenshanian period. 87Sr/86Sr sourcetracing shows the ore-forming materials came dominantly from alkaline intrusions. These results, combined with other isotope and REE data, suggest that the Dengping gold deposit is not a traditional magmatic hydrothermal deposit, but a reworked hydrothermal deposit related to heated and evoved meteoric water.
