Analytical method: UNKNOWN

Technique	UNKNOWN
Material	WHOLE ROCK
Mineral	none
Institution	Unknown, Unknown, USA
Reference	Siebe, Claus; Abrams, Michael; Sheridan, Michael F (1993) Major Holocene block-and-ash fan at the western slope of ice-capped Pico de Orizaba Volcano, Mexico; implications for future hazards. Journal of Volcanology and Geothermal Research. 59; 1-2, Pages 1-33. 1993.

Samples analysed with this method