Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Unknown, Unknown, USA |
| Reference | Luhr, J F; Carmichael, I S E (1982) The Colima volcanic complex, Mexico; III, Ash- and scoria-fall deposits from the upper slopes of volcano Colima. Contributions to Mineralogy and Petrology. 80; 3, Pages 262-275. 1982. |