Affiliation: | 1. Department of Chemistry and Geochemistry, Montana Tech of The University of Montana, 1300 West Park Street, Butte, MT 59701, USA;2. Department of Geological Engineering, Montana Tech of The University of Montana, Butte, MT 59701, USA;3. Department of Geological Sciences, University of Nevada-Reno, Reno, NV 89557, USA;4. Department of Chemistry, The University of Montana, Missoula, MT 59812, USA |