Sample ET-74

NavDat sample number 55386 · ANDESITE

Sample

Sample ID	ET-74
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.1942
Longitude	-122.083
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
6.84		6	11

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.66		WT%	XRF
TIO2	1.06		WT%	XRF
AL2O3	17.86		WT%	XRF
FEOT	7.02		WT%	XRF
MNO	0.16		WT%	XRF
MGO	3.24		WT%	XRF
CAO	6.69		WT%	XRF
NA2O	4.33		WT%	XRF
K2O	1.41		WT%	XRF
P2O5	0.57		WT%	XRF
TOTAL	99.6		WT%	XRF
LOI	0.85		WT%	XRF

References

Priest, George R; Black, Gerald L; Woller, Neil M; Taylor, Edward M (1988) Geologic map of the McKenzie Bridge Quadrangle, Lane County, Oregon. Geological Map Series (Portland). 48; 1988.