Analytical method: UNKNOWN

Technique	UNKNOWN
Material	WHOLE ROCK
Mineral	none
Institution	Unknown, Unknown, USA
Reference	Macias, J L; Garcia, P A; Arce, J L; Siebe, Claus; Espindola, J M; Komorowski, J C; Scott, K (1997) Late Pleistocene-Holocene cataclysmic eruptions at Nevado de Toluca and Jocotitlan volcanoes, central Mexico. Geology Studies. 42, Part 1; Pages 493-528. 1997.

Samples analysed with this method