Geological Core and Sample Repository

The statewide Geological Core and Sample Repository in Marquette houses material representing many miles of core drilling in Michigan .  Mineral exploration and other geology projects are the major sources of samples.  Well cutting and outcrop samples are also included.  Access to these materials is by prior arrangement with Melanie A. Humphrey, Upper Peninsula District Office, Department of Environmental Quality, Office of Geological Survey, (906) 346-8566.  humphrem@michigan.gov

On-line resources include:
"Michigan Geologic Core & Sample Repository" Melanie A. Humphrey, 2006; General information about Michigan Geologic Core & Sample Repository in Marquette; core, geologic samples, Northern and Southern Peninsula counties;
Web Link: http://www.deq.state.mi.us/documents/deq-ogs-gimdl-GGCF.PDF (file size 0.18 MB) and

"Geologic Core and Sample Inventory" Melanie A. Humphrey, 2006; Detailed listing of information about all of the cores and samples in the Keywords; Geologic core, geologic samples, Northern and Southern Peninsula counties;
Web Link: www.deq.state.mi.us/documents/deq-ogs-gimdl-GGCI.pdf (file size 0.69 MB)

Inventory is also available as a data base file 
Web Link: www.deq.state.mi.us/documents/deq-ogs-gimdl-GGCICoreXP.mdb(file size 1.6 MB)