FORMATION TEMPERATURES OF NATURAL COKE IN THE LOWER SILESIAN COAL BASIN, POLAND - EVIDENCE FROM PYRITE AND CLAYS BY SEM-EDX

被引：37

作者：

KWIECINSKA, BK

HAMBURG, G

VLEESKENS, JM

机构：

[1] NETHERLANDS ENERGY RES FDN,POB 1,1755 ZG PETTEN,NETHERLANDS

[2] UNIV MIN & MET KRAKOW,KRAKOW,POLAND

[3] EUROPEAN CTR COAL SPECIMENS,EYGELSHOVEN,NETHERLANDS

来源：

INTERNATIONAL JOURNAL OF COAL GEOLOGY | 1992年 / 21卷 / 04期

关键词：

D O I：

10.1016/0166-5162(92)90025-R

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The purpose of this paper is to show how SEM-EDX can be applied in a study of coals altered to coke by a magmatic intrusion. SEM photographs reveal some textural features of a natural coke which would not be detectable using optical microscopy. The similarity between images of natural and artificial coke is proof that temperatures over 350-degrees-C were experienced during contact metamorphosis. Crystal shapes of minerals are presented-as evidence of hydrothermal activity in the contact zone and an average temperature level below 575-degrees-C. Pyrite is used as a geological thermometer, its shape and composition showing the occurrence of incidental hot spots (750-degrees-C) in contact with the dyke.

引用

页码：217 / 235

页数：19