摘要
采用 X射线衍射 (XRD)及扫描电子显微镜 (SEM)等方法对广西南源洞以层控接触热变质作用为主 ,并伴随有接触交代作用的叠加所形成的硅灰石矿石中的黑色碳质物的物相及存在特征进行了研究。发现硅灰石矿石中的碳质物为石墨 ,并分别与多种矿物紧密伴生 ,伴生情况有几种 :(1)碳质物与硅灰石、方解石紧密伴生 ;(2 )碳质物与石英、方解石紧密伴生 ;(3)碳质物仅与方解石紧密伴生 ;(4 )碳质物呈尘埃状或星点状被包裹于硅灰石矿物颗粒中 ;(5 )碳质物以浸染、渗透方式存在于硅灰石矿物颗粒中。欲将碳质物从硅灰石矿物中解离出来 ,至少要将矿石粉碎到 0 .0 43mm以下。另外 ,还就硅灰石中的碳质物对于硅灰石粉白度的影响进行了讨论。
The characteristics of occurrence of the carbonaceous substance in the wollastonite in Nanyuandong of Guangxi Province were studied by means of the XRD and SEM and so on.The results of the research revealed that the black carbonaceous substance is the graphite.The graphite associates intimately with the wollastonite,calcite and quartz respectively.To free the carbonaceous substance from the wollastonite,the ore must be crushed and ground to small particle of less than 0.043 mm.The influence of the black carbonaceous substance on the whiteness of the wollastonite powder was discussed.
出处
《矿物岩石》
CAS
CSCD
北大核心
2002年第1期10-14,共5页
Mineralogy and Petrology
关键词
硅灰石矿床
碳质物
微观特征
硅灰石粉
白度
广西
wollastonite
carbonaceous substance
microscopic characteristics
wollastonite powder
whiteness
