Meet the Faculty and Scientists Working in CREG

John Muntean

John Muntean, Director of CREG (NBMG)

In addition to being Director of CREG, John Muntean is an Associate Professor with the Nevada Bureau of Mines and Geology (NBMG), which serves as the state geological survey of Nevada and is a department within the Mackay School of Earth Sciences and Engineering at the University of Nevada Reno. He decided to become a geologist in high school with the goal of applying science to the discovery of ore deposits, and has tried throughout his career to straddle the boundary between exploration and research. He received his BS from Purdue University, his MS from the University of Michigan, and his PhD from Stanford University. Before joining UNR in 2005, John worked 12 years in the mining companies exploring for gold mainly in Nevada, including Santa Fe Pacific, Homestake and Placer Dome. At Placer Dome, he provided technical support for Placer’s worldwide near-mine and long-term generative exploration efforts. He has published extensively on epithermal, porphyry, and Carlin-type gold deposits in Nevada and Latin America. His research is field based backed by appropriate laboratory analyses. It is aimed at understanding ore controls and ore-forming processes. The goal of his research is to assist industry in where to look to for ore-bearing hydrothermal systems, and once in the right location, how to vector into ore. At NBMG he has also been involved in mineral assessments, mapping projects, database compilations, and reporting on mineral exploration activities in Nevada. In addition at UNR, he has supervised graduate students, helps teach the undergraduate field camp, and teaches graduate courses in economic geology. He is an active member of the Society of Economic Geologists and the Geological Society of Nevada.

>>Click here for links to John's publications and CV

Nevada Bureau of Mines and Geology

Mike ResselMike Ressel

Mike Ressel’s research focuses on the relationships between ore deposits, igneous geology, and tectonism and specifically, how, when, and where ore deposits form as a result of geologic processes that operate on regional through local scales. In his new role as research scientist at the Nevada Bureau of Mines and Geology, his goals are to further understanding of economically-important but enigmatic Carlin-type gold deposits by placing them into broader geologic and metallogenic context including age, magmatic and tectonic associations, and relationship to other ore deposit types using a variety of methods including mapping, geochronology, geochemistry, and geophysics. In addition to basic ore deposits research in the Great Basin, Mike will be involved in geologic mapping, mineral assessments, graduate research, and teaching. Before joining UNR late in 2014, Mike worked for 15 years in the exploration and mining industry, including most recently as chief geologist for North America at Newmont Mining Corporation, where he contributed to evaluations of grassroots through advanced exploration projects, helped guide regional exploration focus, was involved in developing training and mentoring programs in both mines and exploration, and liaised with university-sponsored research. Prior, Mike worked in mine geology, development, and exploration for Carlin-type gold, epithermal Au-Ag, porphyry Cu-Au, gold skarn, and orogenic gold deposits principally in the U.S., Canada, Mexico, and West Africa for Newmont, Kinross Gold, and Victoria Resources, Inc. Mike has a Ph.D. in geology from the University of Nevada, Reno.

Department of Geological Sciences and Engineering

Wendy CalvinWendy Calvin

Dr. Calvin's research is in the area of optical and infrared spectroscopy of minerals and ices.  She uses remote sensing, laboratory and field data to identify and map the surface composition of solid planets in the solar system.  Recent efforts include using mineral spectroscopy to map hydrothermal alteration associated with energy and mineral resources in regional assessments and in drill core.  Dr. Calvin received her PhD in 1991 from the University of Colorado in Boulder, and was with the Astrogeology Team of the U. S. Geological Survey before coming to UNR in 2000.  She is currently affiliated with several on-going spacecraft missions including the Mars Exploration Rovers and the Mars Reconnaissance Orbiter.  She is the Director of the Great Basin Center for Geothermal Energy ( |

Simon PoulsonSimon Poulson

Simon Poulson is a Research Professor in the Department of Geological Sciences & Engineering at the University of Nevada Reno.  He started off in science with an interest in chemistry at high school, then got introduced to geology during his BSc studies at the University of Cambridge, and has been working on a combination of both (as geochemistry) ever since.  He received his PhD from the Pennsylvania State University, with subsequent post-doctoral positions at Dartmouth College and the University of Wyoming, before joining UNR in 1998.  His interests are in the general fields of stable isotope geochemistry and low temperature geochemistry, but he's been around enough ore deposit research (at UNR, and also at Penn State where he worked with Prof. Hiroshi Ohmoto) for long enough that an interest in economic geology has rubbed off on him.  Specific economic geology interests include studying the geochemical behavior of sulfur in igneous systems, and the environmental geochemistry aspects of ore deposits and mining.

U.S. Geological Survey

Lisa Stillings

Peter Vikre