Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Unknown, Unknown, USA |
| Reference | Allan, J F; Carmichael, Ian S E (1984) Lamprophyric lavas in the Colima Graben, SW Mexico. Contributions to Mineralogy and Petrology. 88; 3, Pages 203-216. 1984. |