Sample 86-093

NavDat sample number 55870 · BASALTIC-ANDESITE

Sample

Sample ID	86-093
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3407
Longitude	-121.94
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	55.86		WT%	XRF
TIO2	1.86		WT%	XRF
AL2O3	15.97		WT%	XRF
FEO	9.94		WT%	XRF
MNO	0.17		WT%	XRF
MGO	3.52		WT%	XRF
CAO	7.59		WT%	XRF
NA2O	3.45		WT%	XRF
K2O	1.31		WT%	XRF
P2O5	0.33		WT%	XRF

References

Swanson, Donald A (1989) Geologic maps of the French Butte and Greenhorn Buttes quadrangles, Washington. Open-File Report - U. S. Geological Survey. 1989.