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Reflectance spectroscopy in the visible and near-infrared (0.35-2.55 mu m); applications in carbonate petrology

Susan J. Gaffey
Reflectance spectroscopy in the visible and near-infrared (0.35-2.55 mu m); applications in carbonate petrology
Geology (Boulder) (April 1985) 13 (4): 270-273

Abstract

Reflectance spectroscopy in the visible and near-IR (0.35-2.55 mu m) offers a rapid, inexpensive, non-destructive tool for determining the mineralogy and for investigating the minor-element chemistry of the hard-to-determine carbonate minerals; such information can be obtained in one step. Mineralogy is determined by the positions and widths of absorptions due to vibrations of the carbonate radical, and the positions and shapes of absorptions due to transition metal cations if present. Relative intensities of absorptions due to transition metal cations can be used to determine their concentrations, e.g. detection limits for Mn and Fe are 0.1 and 0.01 wt.%, respectively. This technique is also very sensitive to the presence of water. Spectra indicate that aqueous fluid inclusions are particularly abundant in skeletal carbonate and that the quantity of inclusions varies from one type of organism to another. Spectra indicate that inclusions are lost during diagenesis of skeletal material, providing a new criterion for diagenetic studies.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 13
Serial Issue: 4
Title: Reflectance spectroscopy in the visible and near-infrared (0.35-2.55 mu m); applications in carbonate petrology
Author(s): Gaffey, Susan J.
Affiliation: Hawaii Inst. Geophys., Planet. Geosci. Div., Honolulu, HI, United States
Pages: 270-273
Published: 198504
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 17
Accession Number: 1985-046733
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Update Code: 1985
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