Analytical methods manual for the Mineral Resource Surveys Program, U.S. Geological Survey

The analytical methods validated by the Mineral Resource Surveys Program, Geologic Division, is the subject of this manual. This edition replaces the methods portion of Open-File Report 90-668 published in 1990. Newer methods may be used which have been approved by the quality assurance (QA) project and are on file with the QA coordinator.

This manual is intended primarily for use by laboratory scientists; this manual can also assist laboratory users to evaluate the data they receive. The analytical methods are written in a step by step approach so that they may be used as a training tool and provide detailed documentation of the procedures for quality assurance. A "Catalog of Services" is available for customer (submitter) use with brief listings of:

• the element(s)/species determined,
  
• method of determination,
  
• reference to cite,
  
• contact person,
  
• summary of the technique,
  
• and analyte concentration range.

For a copy please contact the Branch office at (303) 236-1800 or fax (303) 236-3200.