Canadian group serves policy-making communities by providing emissions inventory input for a variety of modelling activities. Register and download data sets.

Team in Germany compiles this database containing published chemical and isotopic data rocks, minerals, and melt/fluid inclusions. Query data by geography or chemistry.

One of the largest non-governmental scientific organizations offers its igneous and sedimentary database for petrological research.

World Data Center for Marine Geology & Geophysics, Boulder offers LDEO carbon 14 data files in compressed format. With documentation and a summary of the database.

Read an introduction to its analytical methods and analyses and download the volcanic glass data file. Includes a reference list.

Chart allows users to click on the species symbol and receive a table of the molar heat capacity, entropy, and standard enthalpy of formation values for that species.