Both a scanning electron microscope and an electron microprobe (EMP) were used in this study to analyze the cathodoluminescence properties of quartz grains in samples of the Upper Freeport coal bed because quartz grains in coal are small (silt sized) and below the resolution capabilities of a standard luminoscope. Quartz grains were identified by the detection of silicon alone with energy dispersive X-ray units attached to both the SEM and the EMP.
Additional publication details
ORIGIN OF QUARTZ IN COAL.
Washington, DC, USA
Larger Work Title:
ACS Division of Fuel Chemistry, Preprints
Preprints of Papers - American Chemical Society, Division of Fuel Chemistry, Volume 29, Number 4.