Analytical method: PENFIELD
| Technique | PENFIELD |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | USGS MENLO PARK, MENLO PARK, CA 94025, USA |
| Reference | Mahood, G A (1981) Chemical evolution of a Pleistocene rhyolitic center; Sierra la Primavera, Jalisco, Mexico. Contributions to Mineralogy and Petrology. 77; 2, Pages 129-140. 1981. |
Samples analysed with this method
283, 184, 73, 323, 255, 256, 290, 210, 234, 175, 90, 40, 193, 186, 252, 218, 317, 89, 92, 133, 37, 108, 79, 174, 105, 83, 115, 67, 15