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Parameters of the elementary cell Ǻ and the standard values.
| Parameter | Sample | ASTM Mg calcite 43-0697 | ASTM calcite 47-1743 | ASTM aragonite 41-1475 | |
|---|---|---|---|---|---|
| Mg-calcite + aragonite | |||||
| ao | 4.945(2) | 4.9597(7) | 4.942 | 4.9896 | 4.962 |
| bo | –//– | 7.975(1) | –//– | –//– | 7.968 |
| co | 16.80(1) | 5.7411(7) | 16.85 | 17.0610 | 5.743 |
| Vo(Å3) | 355.8(2) | 227.09(4) | 356.53 | 367.85 | 227.11 |
| d(10 1̄4) | 3.0060 | 3.395 | 3.004 | 3.0355 | 3.397 |
| c/a | 3.397 | 1.157 | 3.409 | 3.419 | 1.157 |
