角岩化无烟煤的发现及初步研究

角岩化无烟煤首见于湖南省骑田岭花岗岩周围晚二叠世煤层中,它是一种低级热接触变质岩。本文在研究角岩化无烟煤岩石学特征的基础上,详细分析了其岩石化学、微量元素、稀土元素和碳同位素的地球化学特征及其有机物的X射线衍射、红外光谱和喇曼光谱特征。并探讨了角岩化无烟煤发现的地质意义。

THE DISCOVERY AND PRIMARY STUDY OF HORNFELSIZED ANTHRACITES

Hornfelsizded anthracite, a low-grade thermal contact metamorphic rock, is found for the first time in the Late Permian coal seams which are distributed around the Qitianling granite body in Hunan province. Having studied the petrologicalch anthracites, the author has analyzed detail their petrochemical, trace-elemant, rare-earth ele-ment and carbon-isotope geochemical features and the chemical construction of their organic constituents such as X-ray diffraction, infrared spetrogram and Raman spectrogram. Also, the author has discussed the importance of the discovery of hornfelsized anthracites geologically.