Sample ST-270

NavDat sample number 55351 · ANDESITE

Sample

Sample ID	ST-270
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.1067
Longitude	-122.072
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
7		5	10

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	62.34		WT%	XRF
TIO2	0.98		WT%	XRF
AL2O3	16.27		WT%	XRF
FEOT	5.33		WT%	XRF
MNO	0.12		WT%	XRF
MGO	2.46		WT%	XRF
CAO	4.78		WT%	XRF
NA2O	5.19		WT%	XRF
K2O	2.29		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	99.96		WT%	XRF
LOI	0.39		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.