Analytical method: SPEC

Technique	SPEC
Material	WHOLE ROCK
Mineral	none
Comment	geometric means
Institution	U.S. GEOLOGICAL SURVEY, DENVER, COLORADO 80225, USA
Reference	Ekren, E B; Houser, F N (1965) Geology and petrology of the Ute Mountains area, Colorado. U. S. Geological Survey Professional Paper. 1965. .

Samples analysed with this method