Sample 92-036

NavDat sample number 57500 · DACITE

Sample

Sample ID	92-036
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.318
Longitude	-121.705
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	65.19		WT%	XRF
TIO2	0.91		WT%	XRF
AL2O3	16.22		WT%	XRF
FEO	5.64		WT%	XRF
MNO	0.13		WT%	XRF
MGO	1.41		WT%	XRF
CAO	3.65		WT%	XRF
NA2O	4.73		WT%	XRF
K2O	1.82		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.