1. Department of Petroleum Engineering, College of Engineering and Applied Science, University of Wyoming, 1000 E. University Avenue, Laramie, WY, 82071-2000, USA
2. Planetary Science Institute, Tucson, Arizona, 85719-2395, USA
3. Department of Chemical Engineering, College of Engineering and Applied Science, University of Wyoming, 1000 E. University Avenue, Laramie, WY, 82071-2000, USA