Mineral Resources On-Line Spatial Data

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database". The database contains 414,304 records.

View:

Show in a web browser window:

Continental US	Alaska	Global

Show in your GIS using OGC WMS:

http://mrdata.usgs.gov/services/ngdbrock?request=GetCapabilities&service=WMS&version=1.1.1

Download:

Download data for geographic areas you choose

Search by state, rock type, or ID number

Notes on using these data within ArcGIS

Get the entire data set

• Shapefile with sample ID and link to report (7.2 MB zip expands to 46 MB)
• DBF files (50 MB in 9 files, zipped, expands to 2.2 GB)
• Separate tables, tab-delimited (36 MB in 9 files, expands to 755 MB)

Documentation:

Metadata:

[Outline] - [Questions & Answers] - [Plain text]

About the database fields

• Database structure (tables and field categories)
• Periodic table of elements showing relevant fields in the database
• Frequently Asked Questions

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Peter Schweitzer
Page Last Modified: Tuesday, 11-Dec-2012 15:44:56 MST