1 Geology Program, School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ, 86011, USA.
2 Center of Excellence in Remote Sensing Education and Research, Elizabeth City State University, Elizabeth City, NC, 27909, USA.
3 Department of Natural Sciences, Elizabeth City State University, Elizabeth City, NC, 27909, USA.
4 Materials and Metallurgical Engineering, New Mexico Institute On Mining & Technology, Socorro, NM, 87801, USA.
5 Los Alamos National Laboratory (Retired), Los Alamos, NM, 87545, USA.
6 Analytical Instrumentation Facility, North Carolina State University, Raleigh, NC, 27695, USA.
7 EAG Laboratories, Eurofins Materials Science, Raleigh, NC, 27606, USA.
8 Department of Chemistry and Biochemistry, DePaul University, Chicago, IL, 60614, USA.
9 Geophysical Institute, University of Alaska Fairbanks, 903 Koyukuk Drive, College, AK, 99775, USA.
10 Faculty of Science, Charles University, Albertov 6, Prague, 12843, Czech Republic.
11 Southern Research Institute, 757 Tom Martin Drive, Birmingham, AL, 35211, USA.
12 US Navy, NAVFAC Mid-Atlantic Region, NS Norfolk, VA, 23511, USA.
13 Comet Research Group, Prescott, AZ, 86301, USA.
14 Restoration Systems, L.L.C., Raleigh, NC, 27604, USA.
15 Department of Geological Sciences, East Carolina University, Greenville, NC, 27858, USA.
16 Savannah River Archaeological Research Program, South Carolina Institute of Archaeology and Anthropology, University of South Carolina, New Ellenton, SC, 29809, USA.
17 CAMCOR, University of Oregon, 1443 E 13th Ave, Eugene, OR, 97403, USA.
18 Department of Earth Science and Marine Science Institute, University of California, Santa Barbara, CA, 93106, USA.
19 Comet Research Group, Prescott, AZ, 86301, USA. CometResearchGroup@gmail.com.
20 College of Archaeology, Trinity Southwest University, Albuquerque, NM, 87109, USA.