Table 6.
Chemical compositions of anhydrite (unit: %).
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | Na2O | K2O | SO3 | Total |
|---|---|---|---|---|---|---|---|---|
| 2.5 | 0.08 | 0.10 | 39.1 | 0.67 | – | – | 57.2 | 99.65 |
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