TY - GEN
T1 - Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data
AU - Cudahy, T.J.
AU - Wilson, J.
AU - Hewson, R.
AU - Linton, P.
AU - Harris, P.
AU - Sears, M.
AU - Okada, K.
AU - Hackwell, J.A.
PY - 2001
Y1 - 2001
N2 - The alteration mineralogy of a porphyry-skarn system near Yerington, Nevada, was mapped using combined airborne hyperspectral HyMap and SEBASS data. The VNIR-SWIR HyMap data provided information about the abundance and levels of Tschermak substitution in white micas, as well as mapping the Mg-Fe chemistry of chlorite. The TIR SEBASS data provided unique information about the abundance and Fe-Al chemistry of garnet and Na-Ca chemistry of plagioclase feldspar. Both wavelength regions mapped calcite, dolomite, amphibole and epidote. The derived mineral maps were validated through spectral, mineralogical and chemical analyses of associated field samples. From these mineral maps, the geometry and physicochemistry of porphyry-skarn hydrothermal system becomes apparent, including the sites for Cu mineralization.
AB - The alteration mineralogy of a porphyry-skarn system near Yerington, Nevada, was mapped using combined airborne hyperspectral HyMap and SEBASS data. The VNIR-SWIR HyMap data provided information about the abundance and levels of Tschermak substitution in white micas, as well as mapping the Mg-Fe chemistry of chlorite. The TIR SEBASS data provided unique information about the abundance and Fe-Al chemistry of garnet and Na-Ca chemistry of plagioclase feldspar. Both wavelength regions mapped calcite, dolomite, amphibole and epidote. The derived mineral maps were validated through spectral, mineralogical and chemical analyses of associated field samples. From these mineral maps, the geometry and physicochemistry of porphyry-skarn hydrothermal system becomes apparent, including the sites for Cu mineralization.
UR - https://ezproxy2.utwente.nl/login?url=https://doi.org/10.1109/IGARSS.2001.976573
UR - https://ezproxy2.utwente.nl/login?url=https://webapps.itc.utwente.nl/library/2001/chap/hewson_map.pdf
U2 - 10.1109/IGARSS.2001.976573
DO - 10.1109/IGARSS.2001.976573
M3 - Conference contribution
AN - SCOPUS:0035573613
SN - 0-7803-7031-7
T3 - IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 631
EP - 633
BT - 2001 International Geoscience and Remote Sensing Symposium (IGARSS)
PB - IEEE
CY - Piscataway, NJ
T2 - IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2001
Y2 - 9 July 2001 through 13 July 2001
ER -