Sample 92-070

NavDat sample number 57502 · DACITE

Sample

Sample ID	92-070
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.278
Longitude	-121.719
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	65.71		WT%	XRF
TIO2	0.91		WT%	XRF
AL2O3	15.29		WT%	XRF
FEO	6.08		WT%	XRF
MNO	0.13		WT%	XRF
MGO	1.67		WT%	XRF
CAO	3.12		WT%	XRF
NA2O	4.81		WT%	XRF
K2O	1.98		WT%	XRF
P2O5	0.3		WT%	XRF

References

Swanson, Donald A (1994) Geologic map of the East Canyon Ridge Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1994.