Table 3. Mean relative abundance of minerals identified in samples.
| Sample | Control Site | Site 1 | Site 2 | Site 3 |
|---|---|---|---|---|
| Gypsum | < 1 | |||
| K-feldspar | - | - | - | 1 |
| Quartz | 97 | 27 | 84 | 70 |
| Mica | - | 13 | 3 | 3 |
| Kaolinite | 3 | 5 | - | 1 |
| Pyrophyllite | - | 55 | 12 | 26 |
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