Sample GR82-065

NavDat sample number 36917 · DACITE

Sample

Sample ID	GR82-065
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.4845
Longitude	-121.515
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
28		24	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	64.88		WT%	XRF
TIO2	0.76		WT%	XRF
AL2O3	16.97		WT%	XRF
FEO	6.46		WT%	XRF
MNO	0.06		WT%	XRF
MGO	0.56		WT%	XRF
CAO	2.7		WT%	XRF
NA2O	4.9		WT%	XRF
K2O	2.45		WT%	XRF
P2O5	0.26		WT%	XRF

References

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