Sample L257B

NavDat sample number 60104 · DACITE

Sample

Sample ID	L257B
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS
Comment	dike

Location

Latitude	45.0682
Longitude	-122.127
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
16		14	19

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.67		WT%	XRF
TIO2	0.65		WT%	XRF
AL2O3	16.64		WT%	XRF
FEOT	3.72		WT%	XRF
MNO	0.07		WT%	XRF
MGO	0.9		WT%	XRF
CAO	4.19		WT%	XRF
NA2O	4.73		WT%	XRF
K2O	2.26		WT%	XRF
P2O5	0.16		WT%	XRF
TOTAL	99.88		WT%	XRF
LOI	1.88		WT%	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.