Sample EEW-7

NavDat sample number 36892 · BASALTIC-ANDESITE

Sample

Sample ID	EEW-7
Rock name	BASALTIC-ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4123
Longitude	-121.587
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	54.69		WT%	XRF
TIO2	1.46		WT%	XRF
AL2O3	17.69		WT%	XRF
FEO	9.13		WT%	XRF
MNO	0.22		WT%	XRF
MGO	4.23		WT%	XRF
CAO	8.43		WT%	XRF
NA2O	3.27		WT%	XRF
K2O	0.67		WT%	XRF
P2O5	0.21		WT%	XRF

References

Swanson, Donald A (1996) Geologic map of the Hamilton Buttes Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1996.