Fine grained Jarosite NMNH95074-1 was used. Fine-grained powder was mixed with water and an eye-dropper was used to deposit a thin coating on a microscope glass thin section. The sample was dried over night and them measured spectrally. Our goal was to unsaturate the jarosite bands and mimic the spectral absorptions found in natural jarosite coatings. Sample was prepared by Gregg Swayze.
XRD Analysis
Natrojarosite + quartz (minor).
X Units
cm⁻¹
Y Units
Absorbance
Data Points
2,126
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Attribution
USGS Spectral Library Version 7, U.S. Geological Survey