3種典型富錳沉積物的形貌學(xué)與礦物學(xué)特征
[Abstract]:In this paper, three typical samples of manganese rich sediments, that is, rock lacquer, dendrite and soil iron manganese film, were collected, and the corresponding longitudinal sections were made. The morphologies and mineralogical characteristics were studied by optical microscope, in situ Raman spectrometer, scanning electron microscope and EDX energy spectrometer. The results show that rock lacquer is a highly mixed deposit, which is composed of sodium manganese ore, hematite, goethite, clay minerals and so on. Macroscopically, the rock lacquer has a direct contact with the bedrock and has a microstratified structure. The microcosmic performance is the periodic fluctuation of manganese content. Dendrite is black branched, mainly composed of barium manganese ore, extremely rich in manganese and poor in silicon and aluminum, and intertwined with the matrix. The soil iron-manganese film is composed of sodium manganite, hematite, goethite, ilmenite and clay minerals, and can be subdivided into black brown rich manganese strip and inner yellowish brown rich iron strip. The morphology and element distribution of the three manganese rich sediments are closely related to their genetic mechanisms.
【作者單位】: 造山帶與地殼演化教育部重點(diǎn)實(shí)驗(yàn)室礦物環(huán)境功能北京市重點(diǎn)實(shí)驗(yàn)室北京大學(xué)地球與空間科學(xué)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目(41230103) 國(guó)家重點(diǎn)基礎(chǔ)研究“973”發(fā)展計(jì)劃(2014CB846001)~~
【分類(lèi)號(hào)】:P588.243
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