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Chert from
Columbia Mine (Union; Schafer; Schaffer; Schafter; Sheldon), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA

Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Data
Mineral Data:Click here to view Chert data
Locality Data:Click here to view Columbia Mine (Union; Schafer; Schaffer; Schafter; Sheldon), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
Nearest other occurrences of Chert
0.2km (0.1 miles) Tobin Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
0.9km (0.5 miles) Monongahela Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
0.9km (0.6 miles) Carpenter Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
1.0km (0.6 miles) Genessee Mine (Ethel), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
1.0km (0.7 miles) Odgers Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
1.3km (0.8 miles) Lawrence Exploration (Wilkinson), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
2.1km (1.3 miles) Richards Mine (Dunn Mine; Richards-Dunn Mine), Alpha, Menominee iron range, Iron Co., Michigan, USA
2.1km (1.3 miles) Richards Mine (Dunn; Richards-Dunn), Alpha, Menominee iron range, Iron Co., Michigan, USA
2.2km (1.4 miles) Ravenna Mine (Old Ravenna), Ravenna-Prickett Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
2.2km (1.4 miles) Ravenna-Prickett Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
2.3km (1.4 miles) Youngstown Mine, Bristol - Youngstown Mine (Claire; Clare; Bristol; Bristal; Youngstown), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
2.3km (1.4 miles) Kimball Mine (Juniette; Juniata; Junietta), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
2.4km (1.5 miles) Bristol - Youngstown Mine (Claire; Clare; Bristol; Bristal; Youngstown), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
2.8km (1.7 miles) Fortune Lake Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
3.2km (2.0 miles) Lamont Mine (Monitor Mine), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
3.2km (2.0 miles) Fairbanks Iron Mine (Lincoln), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
3.5km (2.2 miles) Book Mine, Alpha, Menominee iron range, Iron Co., Michigan, USA
3.7km (2.3 miles) Lincoln Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
3.8km (2.4 miles) Great Western Mine (Iron Star Mine), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
4.5km (2.8 miles) Neely Reserve Prospect, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
4.9km (3.0 miles) Crystal Falls Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
5.1km (3.2 miles) Hilltop Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
5.2km (3.2 miles) Alpha Mine, Alpha, Menominee iron range, Iron Co., Michigan, USA
5.2km (3.3 miles) Victoria Prospect, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
5.5km (3.4 miles) Mastodon Mine (Mastedon Mine; Mastadon Mine), Balkan-Judson Mine, Alpha, Menominee iron range, Iron Co., Michigan, USA
5.6km (3.5 miles) Balkan-Judson Mine, Alpha, Menominee iron range, Iron Co., Michigan, USA
5.6km (3.5 miles) Hope Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
5.9km (3.7 miles) South Mastodon Mine (Manhattan), Alpha, Menominee iron range, Iron Co., Michigan, USA
6.6km (4.1 miles) Cayia Mine (D. M. and M.), Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
6.9km (4.3 miles) Lee Peck Mine, Crystal Falls, Menominee iron range, Iron Co., Michigan, USA
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