Fluorspar District of Illinois Historical Document Folder: Mississippian - Cave in Rock File: Report.pdf UID: 384
Dates
Dataset Reference Date
2015-09-28
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Mississippian - Cave in Rock File: Report.pdf Type: Report UID: 384
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Mississippian - Cave in Rock File: Report.pdf Type: Report UID: 384