Sample 91-052

NavDat sample number 57334 · BASALTIC-ANDESITE

Sample

Sample ID	91-052
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4523
Longitude	-121.645
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	55.17		WT%	XRF
TIO2	1.85		WT%	XRF
AL2O3	16.13		WT%	XRF
FEO	10.35		WT%	XRF
MNO	0.17		WT%	XRF
MGO	3.6		WT%	XRF
CAO	7.01		WT%	XRF
NA2O	4.91		WT%	XRF
K2O	0.55		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.