Strontianite from
USA | |
| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
| Joseph Vasichko (Collected by him at the quarry) |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
Precision Aggregates Incorporated Fremont Quarry, Fremont, Sandusky County, Ohio, USA