In the Rye Patch area, which is located on the alluvial fan on the west side of the Humboldt Range in Pershing County, Presco Energy, LLC, drilled and cored three geothermal gradient holes. The holes are Permits 511, 513, and 515 (details in the report).

The diamond drill core was originally logged and described, and samples underwent X-ray diffraction; petrographic analyses; and SEM, ICP-MS, oxygen isotope, and cathodoluminescence analyses. The results were written up by Jennifer Lyn Johnson in her University of Nevada, Reno, Master of Science thesis, “Characterization of Past Hydrothermal Fluids in the Humboldt House Geothermal Area, Pershing County, NV: Geochemical and Paragenetic Studies of Core Samples,” dated August 2005.

The core was sent to the Great Basin Science Sample and Records Library, which houses the information and publication sales office and sample repository of the Nevada Bureau of Mines and Geology, 2175 Raggio Parkway, Reno, Nevada 89512. Between March and July 2011, David A. Davis relogged, described, and sampled the core and photographed the entire core sets and the samples with a digital camera. Samples were selected to provide representative suites of rock types, alteration types, and vein material encountered in the three wells. The sample descriptions and photographs can be accessed by a link in the text of the report, and the actual skeletonized core can be viewed by contacting the Nevada Bureau of Mines and Geology at the Great Basin Science Sample and Records Library.

Davis, D., 2011, Descriptive logs, skeletonized samples, and photographs of core from Presco Energy's thermal gradient wells P 3-1, P 10-1, and P 32-2 in the Rye Patch area, Pershing County, Nevada: Nevada Bureau of Mines and Geology Open-File Report 2011-10, 2 p. with links to sample descriptions and photographs.