The composition characteristics of altered coals in the Huaibei Coalfield, China, was investigated through a comparative analysis between and unaffected from Wolonghu, Taoyuan Renlou coal mines. Results indicated that Wolonghu mine are mostly anthracite coals, with maximum vitrinite reflectance 1.6–3.9% (average 2.9%). Coals were mainly consisted (66.2–97.0%), followed by inertinite (2.0–4.0%) ...

Temperature-dependent ~300–10 K! reflectance measurements were made on h-Mo4O11 and g-Mo4O11 in the conducting b-c plane in the frequency range 30–8000 cm, for light polarized both parallel and perpendicular to the charge density wave ~CDW! direction ~b axis!. The optical conductivity was determined from a Kramers-Kronig analysis of the reflectance. The data clearly show strong suppression of t...

Optical microscopy is a very unique tool to find out about the structural order of carbonaceous materials and coal by-products. It has two main utilization ways as an instrument to distinguish and quantify different phases in a polished surface and as a record of the reflectance of a given material. Using one or both capabilities there are significant contributions to different aspects of coal ...

Abstract. Analysis of new detrital apatite fission-track (AFT) ages from modern river sands, published bedrock and AFT ages, (U-Th)/He (AHe) the Northern Apennines provides insights into spatial temporal patterns erosion rates through time across orogen. The pattern time-averaged derived AHe Ligurian side orogen illustrates slower relative to Adriatic side. These results are corroborated by an ...

A series of qualitative descriptions and quantitative analyses was used to determine the lithofacies characteristics recognize favorable shale intervals Dawuba Formation in Ziyun area South Qian Depression. The include core description scanning electron microscope (SEM) observation. X-ray diffraction, total organic content analysis, vitrinite reflectance, maceral composition, porosity, permeabi...

The shale gas exploration of the Longmaxi Formation in Yangtze Region China has made a significant breakthrough. As an important hydrocarbon generation organism, graptolite is widely distributed shales, but its potential still unclear. Taking shales Middle as example, this paper discusses organic petrological characteristics and contribution to buried carbon. study area can be divided into orga...

Coal Petrography is for many a black science using terms that are for some not only incomprehensible but also in flux. For utilization purposes, the organic component of coal is generally broken down into reactive and non-reactive macerals, often with little further differentiation of the macerals. The main incentive to differentiate further is the recognition that the degree of reactivity in v...

Abstract The article considers the study of patterns changes in properties coals metamorphism series and identification structural chemical parameters that allow not only to correctly describe them, but also use them as an express method assessment. It is known physical processes such adhesion cohesion play important role coal processing, since dissimilar or homogeneous particles brought into c...