Additional Information
| Author | Heyl, A.V.; Broughton, W.A.; West, W.S.; |
|---|---|
| Publication Year | 1978 |
| Series number | IC16-1978 |
| Resource Type | Report |
| Physical Description | 45 p. |
| Notes | 3rd edition published in 1978. See also: Upper Mississippi Valley Base-Metal District |
| Geographic Area | Grant, Green, Iowa, Lafayette |
| Tags | Driftless Area, Metallic Minerals, Bedrock Geology, Rocks and Minerals |
| ISSN | 0512-0640 |