Analytical method: UNKNOWN

Technique	UNKNOWN
Material	WHOLE ROCK
Mineral	none
Institution	Unknown, Unknown, USA
Reference	Nelson, Stephen A; Livieres, Ricardo A (1986) Contemporaneous calc-alkaline and alkaline volcanism at Sanganguey Volcano, Nayarit, Mexico. Geological Society of America Bulletin. 97; 7, Pages 798-808. 1986.

Samples analysed with this method