Sample 91-043

NavDat sample number 57339 · BASALTIC-ANDESITE

Sample

Sample ID	91-043
Rock name	BASALTIC-ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4102
Longitude	-121.665
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	55.84		WT%	XRF
TIO2	1.46		WT%	XRF
AL2O3	18.75		WT%	XRF
FEO	8.8		WT%	XRF
MNO	0.16		WT%	XRF
MGO	2.89		WT%	XRF
CAO	4.3		WT%	XRF
NA2O	5.69		WT%	XRF
K2O	1.9		WT%	XRF
P2O5	0.22		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.