Sample 92-068

NavDat sample number 57482 · ANDESITE

Sample

Sample ID	92-068
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2708
Longitude	-121.701
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
28		24	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	59.78		WT%	XRF
TIO2	1.4		WT%	XRF
AL2O3	16.72		WT%	XRF
FEO	7.4		WT%	XRF
MNO	0.23		WT%	XRF
MGO	2.32		WT%	XRF
CAO	5.72		WT%	XRF
NA2O	4.59		WT%	XRF
K2O	1.32		WT%	XRF
P2O5	0.52		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.