Sample L55

NavDat sample number 60070 · DACITE

Sample

Sample ID	L55
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	43.3476
Longitude	-122.561
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	68.28		WT%	XRF
TIO2	0.8		WT%	XRF
AL2O3	15.24		WT%	XRF
FEOT	4.09		WT%	XRF
MNO	0.11		WT%	XRF
MGO	1.18		WT%	XRF
CAO	3.22		WT%	XRF
NA2O	4.32		WT%	XRF
K2O	2.57		WT%	XRF
P2O5	0.2		WT%	XRF
TOTAL	100.23		WT%	XRF
LOI	1.18		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.