Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Unknown, Unknown, USA |
| Reference | Rose-William-I Jr.; Bornhorst, Theodore J; Halsor, Sid P; Capaul, William A; Plumley, Patrick S; de, la Cruz Reyna Servando; Mena, Manuel; Mota, Reynaldo (1984) Volcan El Chichon, Mexico; pre-1982 S-rich eruptive activity. Journal of Volcanology and Geothermal Research. 23; 1-2, Pages 147-167. 1984. |