| This calcite typically overgrows quartz and crystallizes before heulandite, stilbite, and apophyllite. |
| Although very beautiful, most Indian apophyllite is colorless. |
| The nonzeolites apophyllite, calcite, and quartz commonly occur at many localities. |
| Apophyllite is seldom seen except in comprehensive collections. |
| The most recent find was a spectacular nodular formation of green apophyllite on white petal-shaped stilbite, discovered last year. |
| Good specimens of sperrylite with apophyllite, prehnite, thaumasite, and calcite are reported. |
