| The Butler, Evergreen, and Knowlton lodes were explored and mined to some extent. |
| Copper also filled voids and occurred in thin fissure veins that cut the lodes. |
| Porcelaneous datolite occurred in the amygdaloidal lodes as veins, vesicle filling, and nodules. |
| This particular color has not been found in other lodes in Ontonagon County and distinguishes datolites from this locality. |
| It can be found in fissure veins and brecciated amygdaloidal basalt lodes but not in the conglomerate lodes. |
| The rock layers surrounding coal lodes were penetrated and separated by drillers and explosives. |
