Sample 91-055

NavDat sample number 57332 · BASALTIC-ANDESITE

Sample

Sample ID	91-055
Rock name	BASALTIC-ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.45
Longitude	-121.626
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	54.99		WT%	XRF
TIO2	1.39		WT%	XRF
AL2O3	16.86		WT%	XRF
FEO	8.89		WT%	XRF
MNO	0.15		WT%	XRF
MGO	4.76		WT%	XRF
CAO	8.96		WT%	XRF
NA2O	3.38		WT%	XRF
K2O	0.38		WT%	XRF
P2O5	0.24		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.