Geochemical and mineralogical studies have shown that N is a ubiquitous component in igneous, metamorphic, and especially sedimentary rocks. N is structurally bound in the form of NH<sub>4</sub><sup>...Geochemical and mineralogical studies have shown that N is a ubiquitous component in igneous, metamorphic, and especially sedimentary rocks. N is structurally bound in the form of NH<sub>4</sub><sup>+</sup> in such minerals as buddingtonite, NH<sub>4</sub>-bearing biotite or mica. NH<sub>4</sub>-illite has been reported abroad; however, no detailed report about it has been made in Chi-展开更多
文摘Geochemical and mineralogical studies have shown that N is a ubiquitous component in igneous, metamorphic, and especially sedimentary rocks. N is structurally bound in the form of NH<sub>4</sub><sup>+</sup> in such minerals as buddingtonite, NH<sub>4</sub>-bearing biotite or mica. NH<sub>4</sub>-illite has been reported abroad; however, no detailed report about it has been made in Chi-
