B--Cation exchange capacity and X-ray diffraction of geologic samples

The U.S. Geological Survey (USGS), Central Energy Resources Science Center (CERSC), has issued a Sources Sought Notice (Reference ID: 140G0226Q0176) to conduct market research for mineralogical analysis services. This notice seeks to identify qualified small businesses—including 8(a), HUBZone, Service-Disabled Veteran-Owned, and general small businesses—capable of performing these specialized laboratory services to help determine the final procurement strategy. The scope of work requires the contractor to perform mineralogical analysis on rock samples, categorized into two primary tasks: - **Task 1:** Perform quantitative Cation Exchange Capacity (CEC) and whole-rock X-ray Diffraction (XRD) analyses using full pattern fitting techniques on 150 samples. - **Task 2:** Perform detailed clay-fraction analyses on a subset of 30 samples to identify specific clay types and interstratification percentages. All prepared samples must follow designated scientific methodologies, with raw data and mineral quantifications delivered in Excel format within an eight-week turnaround timeframe. Quality control standards dictate that any results failing to meet USGS accuracy thresholds must be reanalyzed at no additional cost. This requirement falls under NAICS code 541380 (Testing Laboratories and Services). Interested vendors must have an active Unique Entity Identifier (UEI) and be registered in the System for Award Management (SAM). Capability statements and business information must be submitted via email to jennifer_rollin@ios.doi.gov by September 15, 2026, at 12:00 PM Mountain Time.