Sample 89-031

NavDat sample number 57358 · ANDESITE

Sample

Sample ID	89-031
Rock name	ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4095
Longitude	-121.744
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
24		19	30

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.82		WT%	XRF
TIO2	1.7		WT%	XRF
AL2O3	16.49		WT%	XRF
FEO	8.16		WT%	XRF
MNO	0.2		WT%	XRF
MGO	3.1		WT%	XRF
CAO	5.76		WT%	XRF
NA2O	4.59		WT%	XRF
K2O	0.91		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.