Sample 93-082

NavDat sample number 36913 · ANDESITE

Sample

Sample ID	93-082
Rock name	ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.482
Longitude	-121.567
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
26		19	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	62.66		WT%	XRF
TIO2	0.77		WT%	XRF
AL2O3	15.25		WT%	XRF
FEO	9.07		WT%	XRF
MNO	0.22		WT%	XRF
MGO	0.81		WT%	XRF
CAO	4.26		WT%	XRF
NA2O	5.4		WT%	XRF
K2O	1.25		WT%	XRF
P2O5	0.32		WT%	XRF

References

Swanson, Donald A (1996) Geologic map of the Hamilton Buttes Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1996.