The U.S. Geological Survey (USGS) is conducting market research to identify qualified laboratories capable of performing specialized radiogenic isotope and platinum group element (PGE) analyses on rock samples to support geologic research in Alaska. The required services include digesting samples, chromatographically purifying and analyzing isotopes (Sr, Nd, Hf, Os), analyzing PGE concentrations, and providing all results in a specified Excel format. This is a sources sought announcement for planning purposes only and is not a request for quotes or proposals. Responses are limited to 10 pages and must be submitted via email. The associated NAICS code is 541380 with a size standard of $19 million.