Table 3.
Summary of X-ray diffraction (XRD) S-Q analysis results for all precipitates.
| Specimen name | Experimental series | Parent soil | Relative % of CaCO3 (By Mass)* | Other detected minerals (in order of decreasing abundance) | ||
|---|---|---|---|---|---|---|
| % Calcite | % Vaterite | % Aragonite | ||||
| E1_0% ASW | (1) ASW | Ottawa F-65 sand | 85 | 9 | 6 | Quartz |
| E2_50% ASW | (1) ASW | Ottawa F-65 sand | 81 | 10 | 9 | Quartz |
| E3_100% ASW | (1) ASW | Ottawa F-65 sand | 80 | 7 | 13 | Quartz |
| E4_0 mM Mg2+/0 mM Sr2+ | (2) ASW ions | Ottawa F-65 sand | 86 | 8 | 6 | Quartz |
| E5_27 mM Mg2+ | (2) ASW ions | Ottawa F-65 sand | 85 | 9 | 6 | Quartz |
| E6_54 mM Mg2+ | (2) ASW ions | Ottawa F-65 sand | 90 | 5 | 5 | Quartz |
| E7_108 mM Mg2+ | (2) ASW ions | Ottawa F-65 sand | 81 | 11 | 8 | Quartz, Magnesian Calcite |
| E8_0.055 mM Sr2+ | (2) ASW ions | Ottawa F-65 sand | 88 | 6 | 6 | Quartz |
| E9_0.11 mM Sr2+ | (2) ASW ions | Ottawa F-65 sand | 86 | 8 | 6 | Quartz |
| E10_0.22 mM Sr2+ | (2) ASW ions | Ottawa F-65 sand | 85 | 9 | 6 | Quartz |
| E11_14 mM SO42− | (2) ASW ions | Ottawa F-65 sand | 85 | 10 | 5 | Quartz |
| E25_Ottawa sand | (5) Soil variations | Ottawa F-65 sand | 85 | 10 | 5 | Quartz |
| E26_Fraser river sand | (5) Soil variations | Fraser river sand | 86 | 7 | 7 | Quartz, Albite |
| E27_Concrete sand | (5) Soil variations | Concrete sand | 92 | 5 | 3 | Quartz, Albite |
| E28_Covelo sand | (5) Soil variations | Covelo sand | 91 | 5 | 4 | Quartz, Albite |
| E29_Delta sand | (5) Soil variations | Delta sand | 89 | 7 | 4 | Quartz, Albite |
| E30_Monterey sand | (5) Soil variations | Monterey sand | 86 | 8 | 6 | Quartz, Microcline, Albite |
| E31_Feldspar | (5) Soil variations | Feldspar | 87 | 7 | 6 | Microcline, Albite, Quartz |
| E32_Olivine | (5) Soil variations | Olivine | 93 | 4 | 3 | Forsterite, Fayalite |
| E33_Mica | (5) Soil variations | Mica | 88 | 9 | 3 | Lepidolite |
| E34_Kaolinite | (5) Soil variations | Kaolinite | 86 | 10 | 4 | Kaolinite |
| E35_Montmorillonite | (5) Soil variations | Montmorillonite | 80 | 14 | 6 | Montmorillonite, Quartz |
*XRD S-Q analyses have an estimated error of ± 5% by mass following other independent analyses.