Sample 93-033

NavDat sample number 36909 · ANDESITE

Sample

Sample ID	93-033
Rock name	ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3753
Longitude	-121.613
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	59.54		WT%	XRF
TIO2	1.06		WT%	XRF
AL2O3	18.4		WT%	XRF
FEO	6.11		WT%	XRF
MNO	0.1		WT%	XRF
MGO	3.02		WT%	XRF
CAO	5.9		WT%	XRF
NA2O	4.71		WT%	XRF
K2O	0.86		WT%	XRF
P2O5	0.31		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.