SOW_Whole_Rock_Geochemical_Analysis_1.pdf
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- Attached to
- Whole Rock Geochemical Analysis
- Solicitation number
- 140G0325Q0234
About this file
This is a Statement of Work (SOW) from the US Geological Survey (USGS) Alaska Science Center for whole-rock geochemical analyses of rock samples. The USGS requires a contractor to prepare and analyze approximately 75 rock samples using specific technical methods, including fusion decomposition, XRF, Leco, ICP-MS, and selective ion electrode techniques for various elemental analyses. The contractor must crush and pulverize samples to precise specifications, clean equipment between samples, and provide digital results in CSV or spreadsheet format with QA/QC documentation.
The contract will be performed at the contractor's facility from the date of award through June 30, 2026. All data produced will belong to the government, and the contractor is responsible for their own work environment and safety. No personnel clearances or government computer access will be required. The Technical Liaison will inspect samples to ensure 100% compliance with standards, and the contractor must redo work at no additional cost if standards are not met. Upon completion of analyses, leftover material will be returned to the USGS.
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Text version
US Geological Survey Alaska Science Center
Statement of Work
I. GENERAL INFORMATION
A. Introduction: The USGS requires whole-rock geochemical analyses of rock samples.
B. Background. The USGS conducts research on regional geology and mineral resources.
This requires knowing the chemical composition of the rocks being studied. Whole-rock geochemical analysis is required to obtain the chemical composition of rocks.
C. Scope. The USGS requires whole rock analysis for approximately up to 75 rock samples anticipated. The rocks will be prepared and analyzed, and the data sent back to the USGS. Based on the initial results, if needed, additional follow-up analyses may be conducted on the samples. Upon completion of all analyses, the leftover material will be sent back to the USGS.
II. WORK REQUIREMENTS
A. Technical Requirements.
1. The contractor will prepare the samples for analysis following standard protocols for whole-rock samples: crush and split to at least 75% passing 2mm and pulverize to at least 85% passing 75 µm. For pulp samples, homogenization is required.
Crushers and pulverizers must be cleaned with barren material after each sample.
2. The contractor will analyze the samples using the following methods: major elements by fusion decomposition and XRF; carbon and sulfur by Leco; base metals by four acid digest and ICP-MS, trace elements by either Na-peroxide or Li-borate fusion and ICP-MS, volatile elements by aqua regia and ICP-MS, and element-specific fusion and selective ion electrode for high-fluorine. The fluorine method should have a lower limit of detection no higher than 100 ppm, and an upper limit of detection of at least 20%. Lithium (Li) must be reportable by at least one of these methods with an upper detection limit of at least 10,000 ppm. At request, additional analyses may be conducted, at the cost of the USGS, on samples with over-limit or below-detection values.
2. The Technical Liaison (TL) will inspect every sample to assure that the quality of the report meets 100% of the standards required by this work statement. If the work fails to meet the standards required, then the contractor shall redo the work at no additional cost to the government.
B. Deliverables. The contractor will provide the results as digital data to the USGS in the form of a CSV or spreadsheet, including QA/QC and certificate of analysis. The contractor will retain the leftover material until the USGS has determined that no additional analyses are needed, at which point the contractor will ship the remaining material back to the USGS.
III. SUPPORTING INFORMATION
A. Place of Performance. Contractor facility.
B. Period of Performance. Date of Award to June 30, 2026
C. Special Considerations.
• Data Rights, Safety, Environment. All data produced as a result of this award will belong to the Government. The contractor provides their own work environment and responsible for their own safety concerns.
• Security/Privacy issues. The contractor will not require personnel clearances, or access to US Government computers.
| I. GENERAL INFORMATION |
| II. WORK REQUIREMENTS |
| III. SUPPORTING INFORMATION |
File details come from the government source that posted it. Updated .