第十五届国际矿物学大会(The l5th General Meeting of IMA)于1990年6月28日至7月3日在北京举行.来自三十四个国家、559名中外矿物学专家、学者出席了本次矿物界国际盛会。开幕式在北京人民大会堂隆重举行,国务院总理李鹏到会并致词;国...第十五届国际矿物学大会(The l5th General Meeting of IMA)于1990年6月28日至7月3日在北京举行.来自三十四个国家、559名中外矿物学专家、学者出席了本次矿物界国际盛会。开幕式在北京人民大会堂隆重举行,国务院总理李鹏到会并致词;国务委员宋健也出席了开幕式. 矿物学作为地质学的一门基础科学,有其相当多的分支学科.这次会议共就成因矿物学、应用矿物学、矿石矿物学、矿物的晶体结构和晶体化学。展开更多
A detailed mineralogical characterization of a tin-polymetallic ore from Mengzi,Yunnan Province,China,was undertaken by automated electron microprobe-based mineral mapping and quantitative analysis methods.The results...A detailed mineralogical characterization of a tin-polymetallic ore from Mengzi,Yunnan Province,China,was undertaken by automated electron microprobe-based mineral mapping and quantitative analysis methods.The results show that the most valuable metal is Sn(0.98%,mass fraction).The main tin minerals are cassiterite and stannite,which account for 94.90% of total tin.Other metals,such as Cu(0.261%),Zn(0.612%) and Pb(0.296%) can also be seen as valuable metal to be recovered.Minerals such as pyrrhotite,pyrite,arsenopyrite,sphalerite,galena and chalcopyrite are disseminated in the ore.Quartz,sericite and dolomite are the main gangue.The optimal grinding fineness should be chosen as 0.037 mm to make sure that most of the tin minerals can be liberated from other minerals.展开更多
文摘第十五届国际矿物学大会(The l5th General Meeting of IMA)于1990年6月28日至7月3日在北京举行.来自三十四个国家、559名中外矿物学专家、学者出席了本次矿物界国际盛会。开幕式在北京人民大会堂隆重举行,国务院总理李鹏到会并致词;国务委员宋健也出席了开幕式. 矿物学作为地质学的一门基础科学,有其相当多的分支学科.这次会议共就成因矿物学、应用矿物学、矿石矿物学、矿物的晶体结构和晶体化学。
基金Project(50774094) supported by the National Natural Science Foundation of ChinaProject(2010CB630905) supported the National Basic Research Program of China
文摘A detailed mineralogical characterization of a tin-polymetallic ore from Mengzi,Yunnan Province,China,was undertaken by automated electron microprobe-based mineral mapping and quantitative analysis methods.The results show that the most valuable metal is Sn(0.98%,mass fraction).The main tin minerals are cassiterite and stannite,which account for 94.90% of total tin.Other metals,such as Cu(0.261%),Zn(0.612%) and Pb(0.296%) can also be seen as valuable metal to be recovered.Minerals such as pyrrhotite,pyrite,arsenopyrite,sphalerite,galena and chalcopyrite are disseminated in the ore.Quartz,sericite and dolomite are the main gangue.The optimal grinding fineness should be chosen as 0.037 mm to make sure that most of the tin minerals can be liberated from other minerals.