摘要
本文从理论上提出了3个参数对霓石的单形进行统计分析,阐明了这3个参数的形态学意义和成因标型性意义。将霓石、钠铁闪石的实际形貌与结构模拟形貌进行对比,认为矛盾的主要原因是与本区霓石、钠铁闪石的特殊生长机制有关,而生长机制又是受生长条件控制的。将表面微形貌、内部结构、生长条件这三者结合起来,得到:过饱和度高时,强键链在成键生长过程中起主导作用,使晶面性质由F→S→K面;过饱和度低时,就会削弱强键链的成键作用,使晶面性质由K→S→F面。本文还从霓石、钠铁闪石的结构、生长条件方面的差异对其形貌差异进行了对比分析。
In this paper, three parameters are defined theoretically for the statistical analysis of single forms of aegirine. The parameters' significance of morphology and genesis typomorphic charac-teristic has also been clarified. The practical morphology and surface microtopography of aegirine and arfvedsonite do not conform to the analogue from their structure. It is mainly due to their particular growth mechanism controlled by environment conditions Combined with sur-face microtopography, structure and growth condition, the conclusion can be made as follows. When the supersaturation is high , the PBCs that have great bond strength will play a princi-pal role in the bonding during the process of the crystal growth , therefore , the F face→ S face → K face ; when the supersaturation is low , the action of the PBCs that have great bond strength will become weaker , therefore , the K face→ S face → face . Through the analysis of the difference in structure and growth condition between aegirine and arfvedsonite , the differ-ence in morphology and surface microtopography between these two minerals has also been ana-lysed .
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第4期367-378,38,共13页
Earth Science-Journal of China University of Geosciences
关键词
霓石
钠铁闪石
形貌学
晶体生长
aegirine,arfvedsonite , morphology and surface microtopography , crystal growth , Fujian Province .
