Present in Michigan County: Marquette Co.; Geological Formation: ; Specific Mine Name: ; Commercial Mining History: ; Published Literature: http://www.michigan.gov/documents/deq/GIMDL-PR10_216197_7.pdf; Unpublished Literature: Progress Report Number Ten: Strategic Minerals Investigations in Marquette and Baraga Counties. 1943. A. K. Snelgrove, W. A. Seaman, and V. L. Ayres. Prepared in cooperation with the Michigan College of Mining and Technology.; Comments: ; USGS Critical Mineral Reference:
