Other
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmns31a0154s&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #NS31A-0154
Other
0933 Remote Sensing, 3616 Hydrothermal Systems (0450, 1034, 3017, 4832, 8135, 8424), 3617 Alteration And Weathering Processes (1039)
Scientific paper
The Leviathan Mine, located in the Monitor Pass mining district in Alpine county California, was previously an open pit sulfur mine that supplied a nearby operation in Yerington, Nevada with sulfur for copper oxide leaching. The area was first mined underground in the mid 1800s and by the 1950s became an open pit operation. A decade later, the sulfur became uneconomic to extract, leaving the company bankrupt. By the 1980s, the EPA had declared Leviathan Mine a Superfund site due to acid mine drainage into Leviathan creek. Remediation continues today, but high sulfur soils and the potential for acid generation is abundant in the Monitor Pass area. This discovery of iron sulfate on Mars motivated the acquisition of airborne and spaceborne data similar to datasets available for Mars. In addition, high spatial resolution mineral mapping could help identify high priority remediation targets within the mine site. Low resolution (30m per pixel) spaceborne data from ALI and ASTER sensors were combined into a 13-filter dataset to locate areas of interest and as an overview of the area. Initial results were promising, showing evidence for iron oxides and clay mineralization, with some areas suggesting sulfates. The combination of thermal infrared and shortwave infrared datasets optimizes the potential for mineral identification. Therefore, we planned dual hyperspectral acquitions. SEBASS thermal data (7-15μm) at 2m per pixel was acquired on July 16, 2007. ProSpecTIR V-S (0.43- 2.45μm) was acquired on August 17, 2007, also at 2m per pixel. Field spectra were collected concurrently with the SpecTIR flight. The high resolution data will be used to confirm and refine the findings from spaceborne results and be presented at the meeting.
Calvin Wendy M.
Shoffner J. D.
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