1. Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, United States
2. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
3. Department of Biology, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, United States
4. Geosciences and Environmental Change Science Center, U.S. Geological Survey, Denver, Colorado 80225, United States
5. Institute for Rock Magnetism, Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, Minnesota 55455, United States