Sample 86-170

NavDat sample number 55856 · GABBRO

Sample

Sample ID	86-170
Rock name	GABBRO
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	46.2877
Longitude	-121.874
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	51.07		WT%	XRF
TIO2	1.13		WT%	XRF
AL2O3	18.55		WT%	XRF
FEO	9.14		WT%	XRF
MNO	0.16		WT%	XRF
MGO	5.82		WT%	XRF
CAO	11.01		WT%	XRF
NA2O	2.57		WT%	XRF
K2O	0.42		WT%	XRF
P2O5	0.13		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.