Skip to main content

Advertisement

Table I Description of bulk rock samples used in this study collected by USGS (see Sec. II A)

From: Micro-spectroscopic investigation of selenium-bearing minerals from the Western US Phosphate Resource Area

Sample No. Weathered classification Unit within mead peak member As (mg kg-1) Cu (mg kg-1) Se (mg kg-1) Fe (%) C (%)
WSPA080Ca More Middle waste shale 27.3 62.0 216 1.18 8.01
WSPB131Ca Less Phosphorite 9.50 94.0 1070 0.84 12.3
WPSC155Cb More Upper waste shale 17.4 41.0 259 2.49 2.74
WPSD098Cb Less Middle waste shale 32.9 2.88 193 1.63 19.1
WPSE131Cc More Upper waste shale 6.60 157 277 1.76 8.20
WPSH047Cd Less Phosphorite 15.6 196 413 0.79 12.3
WPSH053Cd Less Phosphorite 23.4 105 708 1.19 12.2
WPSJ006Cd Least Footwall siltstone 39.9 111 254 1.57 9.88
WPSJ186Cd Least Upper waste 13.1 55.0 445 1.36 4.27
  1. aReference 16.
  2. bReference 19.
  3. cReference 17.
  4. dReference 18.