Ion microprobe study of oxygen isotopic compositions of structurally nonequivalent growth surfaces on synthetic calcite

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doi: 10.1016/S0016-7037(97)00309-8
Authors:Reeder, Richard J.; Valley, John W.; Graham, Colin M.; Eiler, John E.
Author Affiliations:Primary:
State University of New York at Stony Brook, Department of Geosciences, Stony Brook, NY, United States
Other:
University of Wisconsin, United States
University of Edinburgh, United Kingdom
California Institute of Technology, United States
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 61(23), p.5057-5063. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1997
Note:In English. 28 refs.; illus., incl. 1 table
Summary:Oxygen isotope analyses are presented of four vicinal faces on a 10<[dollar]E 1 back 40 up 40 ->4 growth face of a calcite single-crystal synthesized from Ca-NH3-Cl-CO3, and of bulk calcite crystals. The 10<[dollar]E 1 back 40 up 40 ->4 faces showed polygonized spiral-growth hillocks and the face analysed had a single growth hillock with four vicinal faces. The only measurable impurity is Sr occurring in the reagent Ca salt. The results suggest that the kinds of surface structural factors that cause differential incorporation of trace cations and anions do not similarly affect isotopic incorporation, within the analytical capabilities of the study. The surface controls believed to cause growth-step specific or growth-face-specific incorporation relate to the ion's size charge or electronic configuration relative to the geometry of different surface sites. The mass and vibrational differences that distinguish oxygen isotopes have a minimal influence on such factors. [R.K.H.]
Subjects:Calcite; Carbonates; Crystal chemistry; Crystal growth; Crystal structure; Experimental studies; Ion probe data; Isotope fractionation; Isotope ratios; Isotopes; Mass spectra; O-18/O-16; Oxygen; Spectra; Stable isotopes; Synthetic materials; Trace elements
Abstract Numbers:98M/2641
Record ID:1998012818
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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