Petrology: Web Resources

New on-line textbook!

Open Petrology: Open source textbook on igneous and metamorphic petrology (on-line only).

General links

Metamorphic petrology
Atlas of Metamorphic Rocks
Geochemistry Web Links
How phase equilibrium works
Rocks and minerals in thin section (PDF book)

Regional geology

White Mountain magma series, New Hampshire


Mineralogical Society of America Software links Software, mostly thermodynamics and phase diagrams.
MELTS thermodynamic modeling software for magmas.
Thermocalc thermodynamic modeling software especially for metamorphic rocks.
Perple_X thermodynamic modeling software especially for metamorphic rocks.
Theriak-Domino for calculating mostly metamorphic phase diagrams.


Mineralogy Database, WebMineral, lots of information including some useful for thin sections.
Another mineralogy database, MinDat, about the same information but in a different format.
Rocks and minerals under the microscope, lots of pictures.
Thin section videos!

Data sets

EarthChem portal access to multiple igneous petrologic data sets.
WebElements periodic table with a database of many element characteristics.
PETDB database of mostly ocean floor basalts.
NAVDAT database of igneous rocks in western North America.
GEOROC database of continental and oceanic rocks.
EARTHREF database access for many aspects of earth geochemistry.


See the Shaffer Library resources, which include numerous geological journals.
Elements magazine, short articles on a wide range of mineral, geochem, rock, and other topics.

Other information

Geokem, summaries of igneous rock petrology and geochemistry.