Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data

T.J. Cudahy, J.P. Wilson, R. Hewson, P. Linton, P. Harris, M. Sears, K. Okada, J. A. Hackwell

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication2001 International Geoscience and Remote Sensing Symposium (IGARSS)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages631-633
Number of pages3
ISBN (Print)0-7803-7031-7
DOIs
Publication statusPublished - 2001
Externally publishedYes
EventIGARSS 2001 : International Geoscience and Remote Sensing Symposium 2001: Scanning the Present and Resolving the Future - Sydney, Australia
Duration: 9 Jul 200113 Jul 2001

Publication series

NameIEEE International Geoscience and Remote Sensing Symposium (IGARSS)
PublisherIEEE
ISSN (Print)2153-6996
ISSN (Electronic)2153-7003

Conference

ConferenceIGARSS 2001 : International Geoscience and Remote Sensing Symposium 2001
Abbreviated titleIGARSS 2001
CountryAustralia
CitySydney
Period9/07/0113/07/01

Fingerprint

skarn
porphyry
Imaging techniques
Minerals
Feldspar
Mineralogy
Calcite
Garnets
mineral
epidote
hydrothermal system
amphibole
chlorite
feldspar
dolomite
plagioclase
garnet
mineralogy
substitution
Substitution reactions

Cite this

Cudahy, T. J., Wilson, J. P., Hewson, R., Linton, P., Harris, P., Sears, M., ... Hackwell, J. A. (2001). Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data. In 2001 International Geoscience and Remote Sensing Symposium (IGARSS) (pp. 631-633). (IEEE International Geoscience and Remote Sensing Symposium (IGARSS)). Piscataway, NJ: IEEE. https://doi.org/10.1109/IGARSS.2001.976573
Cudahy, T.J. ; Wilson, J.P. ; Hewson, R. ; Linton, P. ; Harris, P. ; Sears, M. ; Okada, K. ; Hackwell, J. A. / Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data. 2001 International Geoscience and Remote Sensing Symposium (IGARSS). Piscataway, NJ : IEEE, 2001. pp. 631-633 (IEEE International Geoscience and Remote Sensing Symposium (IGARSS)).
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abstract = "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.",
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Cudahy, TJ, Wilson, JP, Hewson, R, Linton, P, Harris, P, Sears, M, Okada, K & Hackwell, JA 2001, Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data. in 2001 International Geoscience and Remote Sensing Symposium (IGARSS). IEEE International Geoscience and Remote Sensing Symposium (IGARSS), IEEE, Piscataway, NJ, pp. 631-633, IGARSS 2001 : International Geoscience and Remote Sensing Symposium 2001, Sydney, Australia, 9/07/01. https://doi.org/10.1109/IGARSS.2001.976573

Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data. / Cudahy, T.J.; Wilson, J.P.; Hewson, R.; Linton, P.; Harris, P.; Sears, M.; Okada, K.; Hackwell, J. A.

2001 International Geoscience and Remote Sensing Symposium (IGARSS). Piscataway, NJ : IEEE, 2001. p. 631-633 (IEEE International Geoscience and Remote Sensing Symposium (IGARSS)).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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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.

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Cudahy TJ, Wilson JP, Hewson R, Linton P, Harris P, Sears M et al. Mapping porphyry-skarn alteration at Yerington, Nevada, using airborne hyperspectral VNIR-SWIR-TIR imaging data. In 2001 International Geoscience and Remote Sensing Symposium (IGARSS). Piscataway, NJ: IEEE. 2001. p. 631-633. (IEEE International Geoscience and Remote Sensing Symposium (IGARSS)). https://doi.org/10.1109/IGARSS.2001.976573