有研究矿床学的大咖吗？真心请教一下，这是怎么形成的🦆？

这么大一坨？😓

好好研究一下，成果可以发布论文！

投了20枚宝石

椭球除了黄铁矿，还有别的成分没？

黄铁矿包裹体吧？

参考文献 Origin of pyrite nodules at the top of the nantuo diamictites, Southern China

The formation mechanisms of sedimentary pyrite nodules determined by trace element and sulfur isotope microanalysis

Pyrite nodules up to 20 cm in diameter are found at the top of the Marinoan (~ 635 Ma) Nantuo glacial diamictite as well as in the cap dolostones and shale/siltstones in the lower Doushantuo Formation in eastern Guizhou, southern China. Field occurrences, petrography, and stable sulfur isotopic compositions of pyrite nodules were studied from a section at Taoying, eastern Guizhou, China. Pyrite δ34S values from different nodules varied from 7.3 to 60.5‰ at different stratigraphic levels. No stratigraphic trend existed for the δ34S, supporting the scenario of pyrite formation in sediments before the precipitation of the cap dolostone. Pyrite δ34S values were also homogeneous within individual nodules at a 0.3 to 1 cm sampling scale, but were more heterogeneous at a 2 mm sampling scale. Homogeneity was not expected from the particular model for pyrite nodule formation in a largely closed or semi-closed environment. Thus, differential cementation and compaction of the pyrite-bearing sediments may have produced the nodular shape of the pyrite deposit.

生长的黄铁矿结核嘛？

取样测试一下啊！

谁能全面的分析一下黄铁矿结核的形成机制？

一定不是后期交代，如果交代，它要将占据结核位置的原岩搬走，怎么搬走是问题，即使搬走，也要破坏周围岩石结构，但周围结构保存完好。