Sample 93-034

NavDat sample number 36916 · DACITE

Sample

Sample ID	93-034
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.3775
Longitude	-121.622
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	64.66		WT%	XRF
TIO2	0.7		WT%	XRF
AL2O3	17.33		WT%	XRF
FEO	4.51		WT%	XRF
MNO	0.08		WT%	XRF
MGO	2.47		WT%	XRF
CAO	4.53		WT%	XRF
NA2O	4.29		WT%	XRF
K2O	1.22		WT%	XRF
P2O5	0.21		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.