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. Author manuscript; available in PMC: 2014 Jul 14.
Published in final edited form as: Surf Interface Anal. 2008 Oct;40(10):1356–1361. doi: 10.1002/sia.2904

Table 1.

XPS Ca/Cadjusted, O/Ca ratios and C1s atomic percentages from the three calcium carbonate polymorphs.

aragonite calcite vaterite
Ca/Cadjusted 0.77 0.81 0.85
O/Ca 2.67 2.81 3.56
C(1s)carbonate/C(1s)total 22.47 28.03 26.24
total C1s atomic % 61.04 53.65 49.61