Geology Reference
In-Depth Information
CHAPTER 10
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Sample Identification and Imaging of
Gas-Vent Mineral Assemblages
CHAPTER CONTENTS
10.1 Sample Identification and
Imaging
Introduction
X-Ray Diffraction
Electron Microprobe
Short-Wave Infrared
Spectroscopy
Other Analytical Methods
Comments
Acknowledgments
Important Terms
References
WWW Addresses:
Additional Reading
Scanning electron microscope image of coquimbite rosettes (small bumps) that nucleated
in the laboratory several weeks after collection on a cryptocrystalline mass consisting of
voltaite, alunogen, coquimbite, and an unidentified phase (UP) nucleated from coal-fire
gas on sandstone in the Wuda coalfield of Inner Mongolia. The vesicles in the sample may
be due to boiling water in a crystallizing solution or dehydration reactions after crystal-
lization was completed.
From Stracher et al. (2005).
