Sample 91-071

NavDat sample number 57361 · ANDESITE

Sample

Sample ID	91-071
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4778
Longitude	-121.626
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	60.12		WT%	XRF
TIO2	1.02		WT%	XRF
AL2O3	18.28		WT%	XRF
FEO	6.09		WT%	XRF
MNO	0.11		WT%	XRF
MGO	3.16		WT%	XRF
CAO	6.18		WT%	XRF
NA2O	3.86		WT%	XRF
K2O	0.89		WT%	XRF
P2O5	0.27		WT%	XRF

References

Swanson, Donald A (1993) Geologic map of the Blue Lake Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1993.