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USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Frank Karasti |
| Desautels, P., Patelke, R., Maunula, T., & Belluz, N. (2007). Technical Report on the Northmet Deposit, Minnesota, USA. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Allan Blaske collection, identified by physical properties (hardness, crystal form, cleavage) |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Frank Karasti |
| INSTITUTE ON LAKE SUPERIOR GEOLOGY PROCEEDINGS VOLUME 35 MAY 1989 Part 2. Field Trip Guidebook Trip 1. North Shore Rhyolites, Minnesota Trip 2. Penokean Structural Terranes in East-Central Minnesota Trip 3. Mellen Complex, Wisconsin Trip 4. Archean Gold Occurrences and Their Structural Settings 35th Annual Meeting May 3-6, 1989 held at Duluth, Minnesota 55812 GEOLOGY 1989 Part 2. Field Trip Guidebook |
| Rocks & Min.: 18:302-303 57:93-95. |
| Machamer, J. F. (1964). Geology and Origin of the Iron Ore Deposits of the Zenith Mine, Ely, Minnesota. PhD Thesis The Pennsylvania State University. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| 55TH INSTITUTE ON LAKE SUPERIOR GEOLOGY (2009) PROCEEDINGS VOLUME 55 p. 23-24 Frey, B., & Hanson, A. (2008) Drill Core Evaluation of Vermilion Greenstone Belt Gold Mineralization, Northeastern Minnesota. DNR Open-File Project 373: 2008-2010 |
| Frey, B., & Hanson, A. (2008) Drill Core Evaluation of Vermilion Greenstone Belt Gold Mineralization, Northeastern Minnesota. DNR Open-File Project 373: 2008-2010 |
| Frey, B., & Hanson, A. (2008) Drill Core Evaluation of Vermilion Greenstone Belt Gold Mineralization, Northeastern Minnesota. DNR Open-File Project 373: 2008-2010 |
| Frey, B., & Hanson, A. (2008) Drill Core Evaluation of Vermilion Greenstone Belt Gold Mineralization, Northeastern Minnesota. DNR Open-File Project 373: 2008-2010 |
| Frank Karasti |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Soudan Mine, Soudan, Vermilion Range, St. Louis County, Minnesota, USA