Sample 92-082

NavDat sample number 57505 · DACITE

Sample

Sample ID	92-082
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.3388
Longitude	-121.738
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		18	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	67.8		WT%	XRF
TIO2	0.62		WT%	XRF
AL2O3	15.67		WT%	XRF
FEO	4.4		WT%	XRF
MNO	0.13		WT%	XRF
MGO	0.81		WT%	XRF
CAO	3.61		WT%	XRF
NA2O	4.71		WT%	XRF
K2O	2.06		WT%	XRF
P2O5	0.19		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.