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Integration of remote-sensing alteration mapping and regional geochemistry into new
geospatial-statistical, quantitative mineral resource methods: project activities

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Task 1, Regional mapping of hydrothermal alteration minerals and terrain analysis using ASTER data
Task 2, Identification of potential porphyry copper targets based on alteration types and patterns
using the ASTER hydrothermal alteration data and added to a GIS database

Task 3, Investigation into using additional geochemical and geophysical datasets such as the
National Soils Geochemical Database in the quantitative assessment

Task 4, Synthesis of GIS-format hydrothermal alteration units, compiled from ASTER and surficial geochemical data, into the quantitative assessment by applying geospatial mineral potential mapping and assessment methodologies

Task 1, Regional mapping of hydrothermal alteration minerals and terrain analysis using ASTER data

... to better define potential deposit targets and depth to targets will be investigated at
existing porphyry copper mine sites such as the MacArthur Mine in Yerington, Nevada. This
data will be added to the existing ASTER hydrothermal alteration data set that already
contains agrillic, phyllic, propylitic and hydrothermal silica-rich rocks for the United States Basin and
Range.

John C. Mars, task leader
jmars@usgs.gov
phone 703-648-6302

 

Task 2, Identification of potential porphyry copper targets based on alteration types and patterns using the ASTER hydrothermal alteration data and added to a GIS database

John C. Mars, task leader
jmars@usgs.gov
phone 703-648-6302

 

Task 3, Investigation into using additional geochemical and geophysical datasets such as the
National Soils Geochemical Database in the quantitative assessment

Helen Folger, task leader
hfolger@usgs.gov
phone 703-648-6346

 

Task 4, Synthesis of GIS-format hydrothermal alteration units, compiled from ASTER and surficial
geochemical data, into the quantitative assessment by applying geospatial mineral potential
mapping and assessment methodologies:

This effort will include (1) delineation of multi-level mineral resource favorability tracts, (2) estimates of undiscovered deposits and(or) endowment, (3) measurements of uncertainty, and (4) use of mineral assessment products and results in a multidisciplinary natural resource assessment.

Mark Mihalasky, task leader
mjm@usgs.gov
phone 509-368-3118
Gilpin Robinson, task leader
grobinso@usgs.gov
phone 703-648-6113

 

 

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