Sample 91-088

NavDat sample number 57347 · BASALTIC-ANDESITE

Sample

Sample ID	91-088
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4365
Longitude	-121.713
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	56.7		WT%	XRF
TIO2	1.04		WT%	XRF
AL2O3	20.37		WT%	XRF
FEO	5.64		WT%	XRF
MNO	0.14		WT%	XRF
MGO	2.51		WT%	XRF
CAO	6.58		WT%	XRF
NA2O	5.81		WT%	XRF
K2O	0.96		WT%	XRF
P2O5	0.25		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.