Green Clay Minerals

TLDR: In this article, a reference is made concerning color, to thin section microscopic perception, based largely upon old data, those which combine iron oxidation states and XRD information, which can reflect either compositional differences, mineral structure differences, or differences in geological occurrence.

Abstract: Color poses a problem for scientific study The first problem is the vocabulary one uses to describe color Mint green, bottle green, and kelly green are nice names but not of great utility in that people's physical perception of color is not always the same A second problem is that color in a spectral identification is the result of several absorption emissions, with overlapping signals, forming a complicated spectrum Interpretation depends greatly on the spectrum of the light source and the conditions of transmission–reflection of the sample In this chapter, reference is made concerning color, to thin section microscopic perception The discussion is based largely upon old data, those which combine iron oxidation states and XRD information It seems clear that green clay mineral names can reflect either compositional differences, mineral structure differences, or differences in geological occurrence