庞起发 1庄新国 1李建伏 2付黎明 1钢特穆尔 2徐永3
作者信息
- 1. 中国地质大学构造与油气资源教育部重点实验室,武汉430074
- 2. 内蒙古地质工程有限责任公司,呼和浩特010000
- 3. 内蒙古地质矿产勘查开发局国土资源勘探开发院,呼和浩特010000
- 折叠
摘要
Abstract
Chaoshui Basin, one of Mesozoic and Cenozoic faulted basins in China, locates in the southwest of Inner Mongolia and the east of Gansu Province. This study focuses on the petrography, chemistry and geochemistry of the coals from the western of Chaoshui Basin by maceral analysis, proximate analysis and inductively coupled plasma atomic-emission spectrometry (ICP-AES), and inductively coupled plasma mass spectrometry (ICP-MS). The results show that the coal rank ranges from the high volatile bituminous to subbituminous. The coal is characterized by low ash and sulfur contents. The major macerals are vitrinite and secondly inertinite. Major mineral phases presented in the coals are quartz, kaolinite, secondly Pyrite, calcite, siderite and a small amount of amazonite and microcline. The coaly facies are mainly wet forest swamp facies, and partly of shallow forest swamp facies. Except Sr, B and Cs contents are relatively high. Other trace element content are low in coal. Cr, Ga, Pb, Li, Cu, Ge, V, Sc, Be, W, Th, As, Ti and Nb have a positive correlation with aluminium-silicates. B and Sr may mainly exist in the form of carbonate minerals. S and Mo may mainly exist in the form of sulfide minerals. In addition, the high relevance between Ti, Zr, Nb and Ta show that they may exist in the form of heavy minerals.关键词
潮水盆地/煤岩学/煤化学/煤地球化学/煤相类型Key words
Chaoshui Basin/coal petrography/coal chemistry/coal geochemistry/coal facies分类
化学化工
