Sample 93-070

NavDat sample number 36915 · DACITE

Sample

Sample ID	93-070
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.4937
Longitude	-121.565
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
26		19	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	64.22		WT%	XRF
TIO2	0.74		WT%	XRF
AL2O3	15.17		WT%	XRF
FEO	8.8		WT%	XRF
MNO	0.2		WT%	XRF
MGO	0.73		WT%	XRF
CAO	4.42		WT%	XRF
NA2O	4.42		WT%	XRF
K2O	1		WT%	XRF
P2O5	0.29		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.