Fluorspar District of Illinois Historical Document Folder: Trace Elements File: Sphalerite samples 1961.pdf UID: 1011
Dates
Dataset Reference Date
2015-09-28
Info Date
1961-09-28
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Trace Elements File: Sphalerite samples 1961.pdf Type: Memorandum/Notes UID: 1011
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Trace Elements File: Sphalerite samples 1961.pdf Type: Memorandum/Notes UID: 1011