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 characteristics with high ratio of Si/Al, 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/Al. 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.
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