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T. F. W.巴尔特计算法是一种用来研究岩石交代蚀变前后化学成分变化的常见方法,在蚀变岩石和蚀变矿床的研究中有较为广泛的应用。本文作者针对实际应用中的一些具体地质条件,着重对交代蚀变前后岩石密度发生变化时的计算应用,提出了修正意见,并对计算方法做了进一步的推导和介绍。在自然界,岩石交代作用后可以导致岩石密度的变大或变小,如果仍然按照巴尔特的方法进行计算,势必会夸大或缩小元素的带入和输出量,造成计算上的错误。因此,必须通过“单位晶胞”体积校正,使蚀变交代后的岩石和原岩在等体积“晶胞”间进行对比,方能使计算结果更加符合实际,达到预期的效果。
T. F. W. Barthes method is a common method used to study chemical composition changes before and after alteration and alteration of rocks. It is widely used in the research of altered rock and altered ore deposit. In view of some concrete geological conditions in practical application, the author focuses on the calculation and application of rock density change before and after alteration alteration, puts forward the corrections and further derives and introduces the calculation method. In nature, rocks can account for larger or smaller rock densities. If the calculation is still carried out according to the Barthes method, it is bound to exaggerate or reduce the elemental carry-in and output, resulting in a calculation error. Therefore, it is necessary to make the calculated results more realistic and achieve the expected results through the volume correction of “unit cell”, so that the rock after the alteration alteration and the original rock are compared in an equal volume of “unit cell”.