基于电子探针的上天梯沸石岩矿物特征和化学成分研究  

Study on the Mineralogical Features and Chemical Components of Zeolite Rock in Shangtianti Based on EPMA

作　　者：闫国进[1] 

机构地区：[1]河南工业大学材料学院,郑州450007

出　　处：《河南科学》2012年第2期176-178,共3页Henan Science

摘　　要：用电子探针研究了信阳上天梯非金属综合矿床沸石岩中斜发沸石、片沸石、长石、石英、蒙脱石和黑云母等矿物的显微结构特征和化学成分特征.斜发沸石具有高硅铝比、富钾钙、低钠含量等特征,发育良好,呈厚板状形态,具有玻屑假象.片沸石的特点是硅铝比较低.长石分两种,一种是呈碎裂状、边棱尖锐的斜长石,另一种是呈熔蚀状的碱性长石.蒙脱石为火山胶结物蚀变而成,呈絮状,粒径小于0.1μm,常和石英伴生,并有极少量黑云母晶屑.The microstructure and chemical components of clinoptlolite,heulandite, feldspar, quartz, montmorillonite and biotite in Xinyang Shangtianti nonmetallic mine are investigated mainly by Electronic Probe X-ray Microregion Analysis （EPMA）. The clinoptlolite has the characteristtcs with high ratio of Si/A1, high content of K and Ca, and low content of Na. The clinoptlolite crystallized well and has a form of thick board with a pseudomorphic of vitric chipping. The heulandite has a low ratio of Si/A1. There are two forms of feldspar, one is cracked plagioclase and the other one is etched alkaline feldspar. The montmorillonite has a form of floc and its granularity is lower than 0.1 μm. The quartz existes with the montmorillonite. There is minute amount of biotite in montmorillonite.

关 键 词：沸石岩 矿物特征 化学成分 斜发沸石 电子探针 

分 类 号：P585.2[天文地球—岩石学]