Sample 91-044

NavDat sample number 57359 · ANDESITE

Sample

Sample ID	91-044
Rock name	ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.472
Longitude	-121.67
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	58.93		WT%	XRF
TIO2	1.06		WT%	XRF
AL2O3	15.03		WT%	XRF
FEO	11.96		WT%	XRF
MNO	0.29		WT%	XRF
MGO	1.31		WT%	XRF
CAO	6.08		WT%	XRF
NA2O	3.83		WT%	XRF
K2O	1.02		WT%	XRF
P2O5	0.48		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.