Jason Christopher Willett
Minerals Information commodity specialists collect and analyze information on production, trade, and consumption of minerals from raw material through refining to finished products. Mineral commodity specialists can answer questions on these aspects of a mineral commodity.
I began my career with the U.S. Geological Survey after earning an Associate of Arts degree from Prince George’s Community College. Initially hired as a GS-3, I focused on coal quality topics within the Energy Resources Team. Over the years, I have gained diverse experience in various roles, including geochemist, lab technician, mineralogist, presentation specialist, webmaster, and tool pusher on a drill rig. To further develop my expertise, I participated in coursework and programs at several institutions, including George Mason University, James Madison University, Lehigh University, the University of Kentucky, the University of Maryland, and West Virginia University. In 2024, I joined the Minerals Information Team. Throughout my career, I have worked with a diverse array of industrial minerals, including cement, clays, construction sand and gravel, crushed stone, dimension stone, industrial sand and gravel, kyanite, lime, mica, potash, and vermiculite.
Science and Products
Filter Total Items: 25
Semi-quantitative determination of the modes of occurrence of elements in coal: Results from an international round robin project Semi-quantitative determination of the modes of occurrence of elements in coal: Results from an international round robin project
No abstract available.
Authors
Jason C. Willett, Robert B. Finkelman, Stanley J. Mroczkowski, Curtis A. Palmer, Allan Kolker
Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain
No abstract available.
Authors
Peter D. Warwick, John R. SanFilipo, Jason C. Willett, Steven M. Podwysocki
Tertiary coals in South Texas: Anomalous cannel-like coals of Webb County (Claiborne Group, Eocene) and lignites of Atascosa County (Jackson Group, Eocene) - Geologic setting, character, source-rock and coal-bed methane potential Tertiary coals in South Texas: Anomalous cannel-like coals of Webb County (Claiborne Group, Eocene) and lignites of Atascosa County (Jackson Group, Eocene) - Geologic setting, character, source-rock and coal-bed methane potential
The coal-bearing Gulf of Mexico Coastal Plain of North America contains a variety of depositional settings and coal types. The coal-bearing region extends westward from Alabama and Mississippi, across Louisiana to the northern part of the Mississippi Embayment, and then southward to eastern Arkansas, Texas and northern Mexico (fig. 1). Most of the coal currently mined in Texas is lignite...
Preliminary report on the International Energy Agency mode of occurrence inter-laboratory comparison; Phase I, USGS results Preliminary report on the International Energy Agency mode of occurrence inter-laboratory comparison; Phase I, USGS results
No abstract available.
Authors
Curtis A. Palmer, Allan Kolker, Jason C. Willett, Stanley J. Mroczkowski, Robert B. Finkelman, K.C. Taylor, F.T. Dulong, J. H. Bullock
Coal geology of the U.S. gulf coastal region Coal geology of the U.S. gulf coastal region
No abstract available.
Authors
Peter D. Warwick, Claire E. Aubourg, S.S. Crowley, S.M. Nichols, Steven M. Podwysocki, John R. SanFilipo, R. E. Thomas, C.J. Watt, Jason C. Willett
Quality characteristics of coal beds in the Gulf Coast Province Quality characteristics of coal beds in the Gulf Coast Province
No abstract available.
Authors
S.S. Crowley, Peter D. Warwick, John R. SanFilipo, S.J. Law, Claire E. Aubourg, Jason C. Willett
Non-USGS Publications**
Kalkreuth, W., Holz, M., Mexias, A., Balbinot, M., Levandowski, J., Willett, J., Finkelman, R., Burger, H., 2010, Depositional setting, petrology and chemistry of Permian coals from the Paraná Basin: 2. South Santa Catarina Coalfield, Brazil, International Journal of Coal Geology, V. 84, No. 3–4, P. 213-236.
Holdgate, G.R., McLoughlin, S., Drinnan, A.N., Finkelman, R.B., Willett, J.C. and Chiehowsky, L.A., 2005, Inorganic chemistry, petrography and palaeobotany of Permian of coals in the Prince Charles Mountains, East Antarctica, International Journal of Coal Geology, v.63, no. 1-2, p. 156-178.
Tewalt, S.J., Willett, J.C. and Finkelman, R.B., The World Coal Quality Inventory: A status
report, 2005, International Journal of Coal Geology, v.63, no. 1-2, p. 190-195.
report, 2005, International Journal of Coal Geology, v.63, no. 1-2, p. 190-195.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Historical statistics
Historical statistics
2025 Critical Minerals List
2025 Critical Minerals List
Science and Products
Filter Total Items: 25
Semi-quantitative determination of the modes of occurrence of elements in coal: Results from an international round robin project Semi-quantitative determination of the modes of occurrence of elements in coal: Results from an international round robin project
No abstract available.
Authors
Jason C. Willett, Robert B. Finkelman, Stanley J. Mroczkowski, Curtis A. Palmer, Allan Kolker
Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain
No abstract available.
Authors
Peter D. Warwick, John R. SanFilipo, Jason C. Willett, Steven M. Podwysocki
Tertiary coals in South Texas: Anomalous cannel-like coals of Webb County (Claiborne Group, Eocene) and lignites of Atascosa County (Jackson Group, Eocene) - Geologic setting, character, source-rock and coal-bed methane potential Tertiary coals in South Texas: Anomalous cannel-like coals of Webb County (Claiborne Group, Eocene) and lignites of Atascosa County (Jackson Group, Eocene) - Geologic setting, character, source-rock and coal-bed methane potential
The coal-bearing Gulf of Mexico Coastal Plain of North America contains a variety of depositional settings and coal types. The coal-bearing region extends westward from Alabama and Mississippi, across Louisiana to the northern part of the Mississippi Embayment, and then southward to eastern Arkansas, Texas and northern Mexico (fig. 1). Most of the coal currently mined in Texas is lignite...
Preliminary report on the International Energy Agency mode of occurrence inter-laboratory comparison; Phase I, USGS results Preliminary report on the International Energy Agency mode of occurrence inter-laboratory comparison; Phase I, USGS results
No abstract available.
Authors
Curtis A. Palmer, Allan Kolker, Jason C. Willett, Stanley J. Mroczkowski, Robert B. Finkelman, K.C. Taylor, F.T. Dulong, J. H. Bullock
Coal geology of the U.S. gulf coastal region Coal geology of the U.S. gulf coastal region
No abstract available.
Authors
Peter D. Warwick, Claire E. Aubourg, S.S. Crowley, S.M. Nichols, Steven M. Podwysocki, John R. SanFilipo, R. E. Thomas, C.J. Watt, Jason C. Willett
Quality characteristics of coal beds in the Gulf Coast Province Quality characteristics of coal beds in the Gulf Coast Province
No abstract available.
Authors
S.S. Crowley, Peter D. Warwick, John R. SanFilipo, S.J. Law, Claire E. Aubourg, Jason C. Willett
Non-USGS Publications**
Kalkreuth, W., Holz, M., Mexias, A., Balbinot, M., Levandowski, J., Willett, J., Finkelman, R., Burger, H., 2010, Depositional setting, petrology and chemistry of Permian coals from the Paraná Basin: 2. South Santa Catarina Coalfield, Brazil, International Journal of Coal Geology, V. 84, No. 3–4, P. 213-236.
Holdgate, G.R., McLoughlin, S., Drinnan, A.N., Finkelman, R.B., Willett, J.C. and Chiehowsky, L.A., 2005, Inorganic chemistry, petrography and palaeobotany of Permian of coals in the Prince Charles Mountains, East Antarctica, International Journal of Coal Geology, v.63, no. 1-2, p. 156-178.
Tewalt, S.J., Willett, J.C. and Finkelman, R.B., The World Coal Quality Inventory: A status
report, 2005, International Journal of Coal Geology, v.63, no. 1-2, p. 190-195.
report, 2005, International Journal of Coal Geology, v.63, no. 1-2, p. 190-195.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Historical statistics
Historical statistics
2025 Critical Minerals List