Ammonium-illite smectite interlayer clay minerals in coal-bearing strata in Jincheng district of Shanxi Province
Year: 2012
Type: article
Abstract: X ray diffraction,fourier infrared spectrum and TGA-DSC combined with fourier infrared spectrum were used to study the mineralogical characteristics of the partings and floors of No.9 coal in the areas of Jincheng in Shanxi Province.There are several important characteristics of ammonium-illite smectite interlayer including the sub-peak on the left of 1.033 nm(d(001) of ammonium illite)higher than the right sub-peak,the IR absorption peaks from the distortion vibrtation of NH+4 between 1 427.09 and 1 433.34 cm-1 and NH3 generated heated at the temperature of 561 ℃.Ammonium-illite smectite interlayer is hydrothermal altered clay minerals,generated from the illitization of illite smectite interlayers when K+ is substituted by NH+4 transformed from organic nitrogen in the condition of relatively high mature,and its formation temperature is about 350 ℃.
Source: Meitan xuebao
Author: Songlin Shi
Institution: China University of Mining and Technology
Language: English
Topic: Coal and Its By-products
Subfield: Geochemistry and Petrology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $726
OpenAlex ID: W2356441794