Sample 94-041

NavDat sample number 57753 · DACITE

Sample

Sample ID	94-041
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.5565
Longitude	-121.608
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
27		24	30

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	69.36		WT%	XRF
TIO2	0.43		WT%	XRF
AL2O3	16.28		WT%	XRF
FEO	3.41		WT%	XRF
MNO	0.27		WT%	XRF
MGO	0.81		WT%	XRF
CAO	2.75		WT%	XRF
NA2O	5.11		WT%	XRF
K2O	1.47		WT%	XRF
P2O5	0.1		WT%	XRF

References

Swanson, Donald A (1996) Geologic map of the Packwood Lake Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1996.