| Answer | Crossword Clue |
|---|---|
| epigenic | pertaining to mineral change in a rock |
| metasomatosis | change in the composition of a rock or mineral by the addition or replacement of chemicals |
| metasomatoses | METASOMATOSIS, change in the composition of a rock or mineral by the addition or replacement of chemicals |
| opencast | noting or pertaining to a type of surface mining in which coal and other flat-lying mineral deposits are removed by the excavation of long, narrow trenches |
| saponite | clay mineral, hydrous magnesium aluminum silicate, belonging to the montmorillonite group: found as a soft filling in rock cavities |
| saponites | clay mineral, hydrous magnesium aluminum silicate, belonging to the montmorillonite group: found as a soft filling in rock cavities |
