Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geochemistry of igneous rocks from the PLUTO database
| Label | Statistics | Description |
|---|---|---|
| SIO2 |  | Silicon dioxide concentration (in percent by weight) |
| AL2O3 | | Aluminum oxide concentration (in percent by weight) |
| MGO | | Magnesium oxide concentration (in percent by weight) |
| CAO | | Calcium oxide concentration (in percent by weight) |
| NA2O | | Sodium oxide concentration (in percent by weight) |
| K2O | | Potassium oxide concentration (in percent by weight) |
| TIO2 | | Titanium dioxide concentration (in percent by weight) |
| P2O5 | | Phosphorus pentoxide concentration (in percent by weight) |
| MNO | | Manganese oxide concentration (in percent by weight) |
| FETO3 | | Total iron concentration expressed as ferric oxide (in percent by weight) |
| SUM | | Sum of the weight percents of SIO2, AL2O3, MGO, CAO, NA2O, K2O, TIO2, P2O2, MNO, and FETO3 |
| FE2O3 | | Ferric oxide concentration (in percent by weight) |
| FEO | | Ferrous oxide concentration (in percent by weight) |
| CO2 | | Carbon dioxide concentration (in percent by weight) |
| H2O_PLUS | | Water ("Essential" or "Bound" water) in percent by weight. Usually determined as the difference between total water and "moisture" (water lost from the sample on heating at 110 degrees centigrade). |
| H2O_MINUS | | Moisture (water lost from the sample on heating at 110 degrees centigrade) in percent by weight. |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://tin.er.usgs.gov/pluto/igneous/about.php?group=Chemical+analysis
Page Contact Information: pschweitzer@usgs.gov
Page Last modified: 16:43 on 16-Oct-2009
