Experimental study on crystallization kinetics of alkali feldspar under high T-P conditions

被引：1

作者：

Li, FC ^{[1
]}

Zhu, JC

Rao, B

Lai, MY

Jin, ZD

机构：

[1] Nanjing Univ, Dept Earth Sci, Nanjing 210093, Peoples R China

[2] Nanjing Univ, State Key Lab Res Mineral Deposits, Nanjing 210093, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2000年 / 45卷 / 22期

关键词：

alkali feldspar; nucleation density; nucleation lag; nucleation rate; crystal-growth rate;

D O I：

10.1007/BF03183535

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In the granite-NaF-H2O system, there exists a nucleation lag in the course of alkali feldspar crystallization indicated by experiments on crystallization kinetics. The nucleation lag time is about 18 h at 700 degreesC and about 6 h at 650 degreesC. Meanwhile, both nucleation rate and crystal-growth rate of alkali feldspar are not constant during the crystallization process, but vary with crystallization time. Here we suggest that the lag time should be taken into account in the calculation formula of nucleation rate and crystal-growth rate to obtain more reliable parameters.

引用

页码：2096 / 2100

页数：5