Quantitative determination of some carbonate minerals in Greenschist Facies meta-volcanic rocks
Abstract
X-ray powder diffraction methods, successful in quantitative determination of silicate minerals in fine-grained rocks, have been applied to the determination of calcite, dolomite, and magnesite in greenschist facies meta-volcanic rocks. Internal standard graphs employing two standards (NaCl and Mo) have been determined.Carbonate mineral modes (calcite and dolomite) for 6 greenschist facies meta-volcanic rocks obtained by the X-ray powder method have been compared to normative carbonate mineral contents calculated for the same rocks. This comparison showed a maximum variation of 7.7 wt.% between the X-ray modes and the normative carbonate mineral contents of the rocks. Maximum standard deviation for the X-ray modes of these rocks was equivalent to 4.4 wt.%.
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Magnesite is stable at pressures and temperatures that encompass metamorphic and hydrothermal systems, continental and oceanic sedimentary environments, and shallow crustal and surface processes.
“magnesite is stable at pressures and temperatures that encompass metamorphic and hydrothermal systems, continental and oceanic sedimentary environments, and shallow crustal and surface processes (Bristol, 1972; McGetchin and Besancon, 1973; Lappin and Smith, 1978; Pohl, 1990; Zhang and Liou, 1994; Sherlock and Logan, 1995; Melezhik et al., 2001; Schroll, 2002; Hansen et al., 2005; Boschi et al., 2”
From Clumped-isotope thermometry of magnesium carbonates in ultramafic rocks (2016) · cites this paper as Bristol, 1972
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Clumped-isotope thermometry of magnesium carbonates in ultramafic rocks
García del Real, P., Maher, K., Kluge, T., Bird, D. K., Brown, G. E., & John, C. M. (2016) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2016.08.003 · Cited by 50 · see citing works
- Authors
- Bristol, C. C.
- Corresponding author
- Bristol, Calvert C.
- Venue
- Canadian Journal of Earth Sciences
- Publisher
- Canadian Science Publishing
- Published
- 1972-01-01
- Volume
- 9
- Issue
- 1
- Pages
- 36-42
- ISSN
- 0008-4077 (ISSN-L)
- 1480-3313
- OpenAlex
- W1985540127
- Cited by
- 2
- References
- 0
- Citations by year
- 2016: 1
- FWCI
- 0.38
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Canadian Journal of Earth Sciences (publishedVersion)
- Funders
- National Research Council Canada
- Topics
- Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
- Physical Sciences › Materials Science › Materials Chemistry › X-ray Diffraction in Crystallography
- Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Mineralogy and Gemology Studies
- Keywords
- carbonate minerals, calcite, dolomite, magnesite, greenschist facies, metavolcanic rock, X-ray powder diffraction
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