Sample 87-062

NavDat sample number 55917 · BASALT

Sample

Sample ID	87-062
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	46.4403
Longitude	-121.945
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	51.96		WT%	XRF
TIO2	1.59		WT%	XRF
AL2O3	19.25		WT%	XRF
FEO	9.72		WT%	XRF
MNO	0.17		WT%	XRF
MGO	3.73		WT%	XRF
CAO	9.94		WT%	XRF
NA2O	3.21		WT%	XRF
K2O	0.23		WT%	XRF
P2O5	0.21		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.