Sample 92-062

NavDat sample number 57493 · ANDESITE

Sample

Sample ID	92-062
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2613
Longitude	-121.74
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	62.58		WT%	XRF
TIO2	0.93		WT%	XRF
AL2O3	16.39		WT%	XRF
FEO	6.05		WT%	XRF
MNO	0.1		WT%	XRF
MGO	2.18		WT%	XRF
CAO	5.4		WT%	XRF
NA2O	3.7		WT%	XRF
K2O	2.45		WT%	XRF
P2O5	0.22		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.