Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Unknown, Unknown, USA |
| Reference | Luhr, James F; Carmichael, Ian S E; Varekamp, Johan C (1984) The 1982 eruptions of El Chichon Volcano, Chiapas, Mexico; mineralogy and petrology of the anhydrite-bearing pumices. Journal of Volcanology and Geothermal Research. 23; 1-2, Pages 69-108. 1984. |