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The influence of heating on cathodoluminescence emission from natural calcite

Roger A. Mason
The influence of heating on cathodoluminescence emission from natural calcite
The Canadian Mineralogist (June 1997) 35, Part 3: 723-733

Abstract

Samples of carbonate rocks from W Newfoundland were heated at 400 degrees C for 18.8-366 h, and CL spectra were collected from both heated and unheated ('reference') calcite from these rocks, and their intensity, wavelength and bandwidth were measured. On heating, CL intensity typically increases by up to 2.6 times; emission wavelength changes by -20 to + 11 nm and bandwidth changes by -6 to + 12 nm, the natural calcite displaying greater differences than synthetic calcite between samples and as a result of heating. These CL parameters and their changes are compared with an indicator of thermal maturity, the conodont colour alteration index (CAI). Most samples with a CAI <<<$I> 3 have emission wavelength (reference) >><$I> 604 nm, change in wavelength <<<$I> 0 and change in bandwidth >><$I> 0. Most samples with CAI >><$I> 3 have emission wavelength (reference) <<<$I> 611 nm, change in wavelength >><$I> 0 and change in bandwidth <<<$I> 0. For the 37 samples studied, 28 meet one or other of the criteria, confirming the potential of CL as a tool in geothermometry.


ISSN: 0008-4476
EISSN: 1499-1276
Coden: CAMIA6
Serial Title: The Canadian Mineralogist
Serial Volume: 35, Part 3
Title: The influence of heating on cathodoluminescence emission from natural calcite
Author(s): Mason, Roger A.
Affiliation: Memorial University of Newfoundland, Department of Earth Sciences, Saint John's, NL, Canada
Pages: 723-733
Published: 199706
Text Language: English
Summary Language: French
Publisher: Mineralogical Association of Canada, Ottawa, ON, Canada
References: 21
Accession Number: 1999-062355
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 2 tables
N46°30'00" - N51°40'00", W59°19'60" - W52°30'00"
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199921
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