Goethite WS222 sample was hand ground from botryoidal sample. Impurities were removed prior to grinding. This 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 goethite bands and mimic the spectral absorptions found in natural goethite coatings.
XRD Analysis
Goethite Perhaps some quartz Konnert, Judith and Marta Flohr, 1992, unpublished data, U.S.G.S. Reston, VA.
X Units
nm
Y Units
Cross-section
Data Points
601
Download
Attribution
USGS Spectral Library Version 7, U.S. Geological Survey