Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Unknown, Unknown, USA |
| Reference | Nelson, S A; Carmichael, Ian S E (1984) Pleistocene to Recent alkalic volcanism in the region of Sanganguey Volcano, Nayarit, Mexico. Contributions to Mineralogy and Petrology. 85; 4, Pages 321-335. 1984. |