Sample 84SH-V81

NavDat sample number 59917 · DACITE

Sample

Sample ID	84SH-V81
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS
Comment	sill?

Location

Latitude	46.2069
Longitude	-122.062
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		22.5	27.5

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.2		WT%	XRF
TIO2	1.03		WT%	XRF
AL2O3	14.77		WT%	XRF
FEOT	5.92		WT%	XRF
MNO	0.13		WT%	XRF
MGO	1.27		WT%	XRF
CAO	3.74		WT%	XRF
NA2O	4.49		WT%	XRF
K2O	2.16		WT%	XRF
P2O5	0.29		WT%	XRF
TOTAL	99.98		WT%	XRF
LOI	4.36		WT%	XRF
BA	440		PPM	XRF
LA	38		PPM	XRF
CE	68		PPM	XRF
RB	54		PPM	XRF
SR	180		PPM	XRF
Y	52		PPM	XRF
ZR	395		PPM	XRF
NB	20		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.