Earth MRI Geochemistry

Geochemical data generated by projects funded by the Earth Mapping Resources Initiative


Show in a web browser window:

Show in your GIS using OGC web services: (WMS, version 1.3.0) (WFS, version 1.1.0)


Get the entire data set:

EMRI_Data_v01_20201231.accdb (Microsoft Access database. 22M bytes)

QAQC_Values.csv (Analysis of geochemical reference material standards, CSV format. 20k bytes)

EMRI_Data.csv (Sample characteristics and geochemical analyses, CSV format. 4.4M bytes)

Limits_AnalyticalMethods.csv (Detection limits for the analytical methods used, by chemical constituent, CSV format. 5k bytes)



About the database tables and fields

All database fields, by category

Earth Mapping Resources Initiative (Earth MRI)

An effort undertaken by USGS as part of the Federal strategy to ensure secure and reliable supplies of critical minerals.


Related topics