Sample BR-281

NavDat sample number 55413 · ANDESITE

Sample

Sample ID	BR-281
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.1817
Longitude	-122.24
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
26		17	35

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.04		WT%	XRF
TIO2	1.37		WT%	XRF
AL2O3	16.8		WT%	XRF
FEOT	7.7		WT%	XRF
MNO	0.16		WT%	XRF
MGO	3.27		WT%	XRF
CAO	7.06		WT%	XRF
NA2O	4.22		WT%	XRF
K2O	1.01		WT%	XRF
P2O5	0.37		WT%	XRF
TOTAL	99.58		WT%	XRF
LOI	0.54		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.