Sample 93-006

NavDat sample number 36884 · ANDESITE

Sample

Sample ID	93-006
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.449
Longitude	-121.548
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	58.38		WT%	XRF
TIO2	2.17		WT%	XRF
AL2O3	17.72		WT%	XRF
FEO	3.16		WT%	XRF
MNO	0.24		WT%	XRF
MGO	4.77		WT%	XRF
CAO	10.3		WT%	XRF
NA2O	2.8		WT%	XRF
K2O	0.15		WT%	XRF
P2O5	0.3		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.