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Preliminary mineralogical characterization of weathered and less-weathered strata of the Meade Peak phosphatic shale member of the Permian Phosphoria Formation: measured sections C and D, Dry Valley, Caribou County, Idaho

Open-File Report 2001-72

Prepared in Collaboration With: Bureau of Land Management, Forest Service, Agrium U.S. Inc., Astaris LLC, J.R. Simplot Company, Monsanto, Rhodia Inc.
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Abstract

This study used powder X-ray diffraction, with Rietveld quantification software to quantify and characterize the mineralogy of the 83 samples collected from two stratigraphic sections measured by the U.S. Geological Survey at the Dry Valley mine in the Meade Peak Member of the Phosphoria Formation. Analyses show extensive variability of carbonate substitution in the fluorapatite structure, determined by measuring the apatite a-cell dimension, as well as patterns of correlation between mineralogy and the stratigraphy.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Preliminary mineralogical characterization of weathered and less-weathered strata of the Meade Peak phosphatic shale member of the Permian Phosphoria Formation: measured sections C and D, Dry Valley, Caribou County, Idaho
Series title:
Open-File Report
Series number:
2001-72
Year Published:
2001
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Geology, Minerals, Energy, and Geophysics Science Center
Description:
Readme File; Report: 69 p.
Country:
United States
State:
Idaho
County:
Caribou County
Additional Online Files (Y/N):
Y