Abstract:
This dataset contains La–ICP–MS and electron microbrobe analyses of feldspars and muscovite from the Jiabusi granitic rocks with layered structure.The structures of granite, an essential content of petrographic description, intuitively characterize the crystallized magma in the crust. Layered structures represent more self-organized than massive, taxitic, globular, and gneissic structures of granite, however, the mechanism is enigmatic. Layer structures usually occur at the cupolas of Nb–Ta–Li–Sn–Be-rich albite granite. A layered structure assembled by multi-cycle and parallel K-feldspar layer and albite layer intergrowths intercalated by quartz layers, which occurs at the cupolas of Li-mica albite granite in the Jiabusi deposit from the northeastern Inner Mongolia Nb–Ta–Li–W–Sn metallogenic belt, give a good example. The high Rb, Cs, Ga, and Pb concentrations in K-feldspar and low Ba and Sr concentrations in both K-feldspar and albite from the granitic rocks with the layered structure also demonstrate that they derived from a melt differentiating from the same magma. The intensities of K and Na display sinusoidal-like curves with opposite trends along
How to cite this dataset:
Wu, S., Hetherington, C. J., Mao, J., Wu, Y., Zhao, J., Wang, Q., 2024. Layered structures formed by spinodal decomposition at the cupolas of Nb–Ta–Li-rich granite, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/113572. Accessed 2025-02-22.
User Contributed Keyword(s):
Granite structures; Layered structures; Nb–Ta–Li-rich granite; Crystallographic preferred orientations; Spinodal decomposition