Geology Reference
In-Depth Information
CHAPTER 9
u
u
Gas Vent Mineralization and Coal
Combustion
CHAPTER CONTENTS
9.1 The Origin of Gas Vent
Minerals
Introduction
Mineral-Forming
Processes
Isochemical
Mineralization
Mass Transfer
Mineralization
Discussion
9.2 Sample Collecting and Field
Data
Introduction
Safety Precautions
GPS and Temperature
Measurements
Mineral and Rock-
Collecting Techniques
Acicular sulfur crystals nucleated around a gas vent in a burning-culm bank, Witbank
coalfield, South Africa. Crystal growth occurred during a 2-week period. The gas
temperature just inside the vent on the day of collection, August 10, 2004, was 37°C.
Photo by Glenn B. Stracher, 2004.
Gas-Collecting
Techniques
In Situ Chemical
Analyses
Discussion
Acknowledgments
Important Terms
References
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Additional Reading
