Table T11. Summary of sediment mineralogy from X-ray diffraction, Hole M0027A. (See table notes.)
| Intensity ratios | Mean | Max |
|---|---|---|
| Clay minerals | 12.2 | 59.2 |
| Kaolinite | 5.7 | 40.3 |
| Micas and Illite | 2.7 | 8.2 |
| Mixed layered clays | 2.7 | 7.9 |
| Smectite | 1.0 | 2.8 |
| Carbonates | 6.5 | 47.6 |
| Mg-rich calcite | 1.4 | 16.6 |
| Calcite | 2.2 | 13.9 |
| Siderite | 1.1 | 9.5 |
| Rhodochrosite | 0.5 | 3.4 |
| Dolomite and ankerite | 0.4 | 2.2 |
| Aragonite | 1.0 | 2.0 |
| Detrital minerals | 74.6 | 170.6 |
| Quartz | 61.5 | 85.6 |
| Plagioclase | 4.0 | 27.4 |
| Chlorite | 2.7 | 22.9 |
| K-Feldspar | 2.7 | 19.7 |
| Pyroxene | 1.7 | 7.7 |
| Zeolites | 0.7 | 2.3 |
| Gibbsite | 0.4 | 2.2 |
| Epidote | 0.6 | 1.9 |
| Amphibole | 0.3 | 0.9 |
| Authigenic minerals | 6.7 | 27.8 |
| Pyrite | 1.7 | 7.3 |
| Glauconite | 1.1 | 6.5 |
| Goethite | 1.6 | 5.6 |
| Apatite | 1.1 | 5.5 |
| Magnetite | 0.8 | 1.7 |
| Barite | 0.4 | 1.1 |
| 100.0 | 305.1 |
Notes: The original sum for the mean of all measured peak intensity ratios was 90.5%. After elimination of all clay minerals (4.55–4.4 Å, 3.4%), gypsum (0.9%), and halite (0.7%), this sum became 85.5%, which was then renormalized to 100% above.
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