Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Unknown, Unknown, USA |
| Reference | Verma, Surendra P (2001) Geochemical evidence for a lithospheric source for magmas from Acoculco Caldera, eastern Mexican volcanic belt. International Geology Review. 43; 1, Pages 31-51. 2001. |