Sample 91-054

NavDat sample number 57336 · BASALTIC-ANDESITE

Sample

Sample ID	91-054
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4353
Longitude	-121.65
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	55.21		WT%	XRF
TIO2	1.35		WT%	XRF
AL2O3	18.1		WT%	XRF
FEO	8.11		WT%	XRF
MNO	0.16		WT%	XRF
MGO	3.72		WT%	XRF
CAO	8.53		WT%	XRF
NA2O	3.77		WT%	XRF
K2O	0.72		WT%	XRF
P2O5	0.34		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.