Sample 93-ER-A226A

NavDat sample number 60028 · DIORITE

Sample

Sample ID	93-ER-A226A
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Gabbro/diorite

Location

Latitude	46.4031
Longitude	-122.492
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		30.6	37.4

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	55.3		WT%	XRF
TIO2	1.29		WT%	XRF
AL2O3	18.02		WT%	XRF
FEOT	7.86		WT%	XRF
MNO	0.15		WT%	XRF
MGO	4.44		WT%	XRF
CAO	8.19		WT%	XRF
NA2O	3.6		WT%	XRF
K2O	0.9		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	99.63		WT%	XRF
LOI	1.12		WT%	XRF
BA	290		PPM	XRF
LA	-30		PPM	XRF
CE	49		PPM	XRF
RB	29		PPM	XRF
SR	440		PPM	XRF
Y	19		PPM	XRF
ZR	215		PPM	XRF
NB	10		PPM	XRF

References

du, Bray Edward A; John, David A; Sherrod, David R; Evarts, Russell C; Conrey, Richard M; Lexa, Jaroslav (2006) Geochemical database for volcanic rocks of the western Cascades, Washington, Oregon, and California. U. S. Geological Survey Data Series. 2006.