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USA | |
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| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
- Ishpeming Greenstone belt (Marquette Greenstone belt)
| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
|
| Koerber, Alexander James, and Joyashish Thakurta. (2019) "PGE-Enrichment in Magnetite-Bearing Olivine Gabbro: New Observations from the Midcontinent Rift-Related Echo Lake Intrusion in Northern Michigan, USA" Minerals 9, no. 1: 21. https://doi.org/10.3390/min9010021
Koerber, Alexander J., (2018) "Geochemical and Petrological Investigation of the Prospective Ni-Cu-Pge Mineralization at the Echo Lake Intrusion in the Upper Peninsula of Michigan, USA". Master's Theses. 3416. |
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| Econ Geol (1985) 80:1425-1435 |
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| Chusi Li, Ripley, E.M., Oberthür, T., Miller, Jr., J.D., and Joslin, G.D. (2008): Mineralium Deposita 43, 97-110. |
