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Remote Detection and Mapping of Supergene Iron Oxides in the Cripple Creek Mining District, ColoradoThe Geophysical and Environmental Research Imaging Spectrometer (GERIS) was flown over the Cripple Creek mining district in south-central Colorado to improve the geological understanding of the district. As part of the study, an airborne mapping technique was developed for the discrimination of the ferric iron minerals hematite, goethite, and jarosite, minerals often important indicators of the distribution of economic mineralization. A software technique was developed which uses the binary encoding of spectral slopes to identify the mineral hematite from the group goethite/jarosite. Mixtures of hematite and goethite can also be detected with GERIS data. The study included district-wide field mapping and spectral measurements to evaluate the accuracy of the image classifications. The ARC/INFO geographic information system (GIS) was a useful tool which allowed quantitative comparison of the field mapping and GERIS image data sets. The study results demonstrate the ability to discriminate individual iron minerals using imaging spectroscopy, and the development of a rapid mapping technique useful in the reconnaissance stage of minerals exploration.
Document ID
20010056742
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Taranik, D. L.
(Colorado Univ. Boulder, CO United States)
Kruse, F. A.
(Colorado Univ. Boulder, CO United States)
Goetz, A. F. H.
(Colorado Univ. Boulder, CO United States)
Atkinson, W. W.
(Colorado Univ. Boulder, CO United States)
Date Acquired
August 20, 2013
Publication Date
January 1, 1990
Publication Information
ISSN: 0000-0170
Subject Category
Earth Resources And Remote Sensing
Funding Number(s)
CONTRACT_GRANT: NAGW-1143
Distribution Limits
Public
Copyright
Other

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