Sample 92-076

NavDat sample number 57472 · ANDESITE

Sample

Sample ID	92-076
Rock name	ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3083
Longitude	-121.745
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
24		15	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.09		WT%	XRF
TIO2	0.93		WT%	XRF
AL2O3	20.98		WT%	XRF
FEO	5.66		WT%	XRF
MNO	0.12		WT%	XRF
MGO	1.71		WT%	XRF
CAO	7.95		WT%	XRF
NA2O	4.28		WT%	XRF
K2O	1		WT%	XRF
P2O5	0.28		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.