Analytical method: UNKNOWN

Technique	UNKNOWN
Material	WHOLE ROCK
Mineral	none
Institution	Unknown, Unknown, USA
Reference	Lange, Rebecca A; Carmichael, Ian S E (1991) A potassic volcanic front in western Mexico; the lamprophyric and related lavas of San Sebastian; with Suppl. Data 91-16. Geological Society of America Bulletin. 103; 7, Pages 928-940. 1991.

Samples analysed with this method