Lane, Melissa D.Bishop, Janice L.Dyar, M DKing, PenelopeParente, MarioHyde, Brendt C.2015-12-130003-004Xhttp://hdl.handle.net/1885/82155Visible, near-infrared, thermal, and Mössbauer spectroscopic data from the exposed, bright track soil at the "Paso Robles" site within Gusev crater, Mars, indicate the presence of Fel3+-sulfates and possibly Fe3+-phosphates admixed with the host soil. WhKeywords: infrared spectroscopy; Mars; mineralogy; Mossbauer spectroscopy; phosphate; soil chemistry; sulfate Acid; Mars; Mineralogy; Paso Robles; Phosphate; Spectra; Spectroscopy; Sulfate200810.2138/am.2008.27572015-12-11