Petrography Analysis At U.S. West Region (Krohn, Et Al., 1993)
(Redirected from Thin Section Analysis At U.S. West Region (Krohn, Et Al., 1993))
Exploration Activity: Petrography Analysis At U.S. West Region (Krohn, Et Al., 1993)
|Exploration Activity Details|
|Location||U.S. West Region|
|Exploration Technique||Petrography Analysis|
The purpose of this discussion is to document mineralogic and textural characteristics of ammonium-bearing minerals at several known gold and mercury-bearing hydrothermal systems. Submicroscopic textural and paragenetic relations of ammonium-bearing minerals are examined at two gold deposits, Ivanhoe, Nevada and McLaughlin, California (Fig. 1 ), to understand how ammonium is related to other hydrothermal minerals. Nitrogen isotope compositions of the ammoniumbearing minerals are measured in an attempt to determine the source of N and to assess the mechanism of N incorporation into minerals within a hydrothermal setting. The results of these analyses may be used to make inferences about the genesis and movement of ammonium in other hydrothermal systems of the western U.S., to provide a context for interpreting data from near-IR sensors, and to investigate whether remote sensing of ammonium-bearing minerals can be utilized as a form of geochemical exploration.
- M. Dennis Krohn, Carol Kendall, John R. Evans, Terry L. Fries (1993) Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Western Us