| Through the years, articles on datolite have periodically appeared in mineral magazines. |
| With the dumps gone, datolite collecting switched to the accessible underground workings of the Michigan mine. |
| Porcelaneous datolite occurred in the amygdaloidal lodes as veins, vesicle filling, and nodules. |
| Both men were usually in the boat, one rowing and the other dropping a weighted float bobber on the datolite. |
| Microscopic examination of datolite nodules from a number of localities shows that native copper is probably the most common impurity. |
| The datolite from this locality also showed traces of platinum but in insufficient quantities to be the coloring agent. |
