Sample 81-047

NavDat sample number 57749 · GABBRO

Sample

Sample ID	81-047
Rock name	GABBRO
Rock type	PLUTONIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	46.6081
Longitude	-121.567
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
21		18	24

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	52.84		WT%	XRF
TIO2	1.32		WT%	XRF
AL2O3	18.32		WT%	XRF
FEO	8.33		WT%	XRF
MNO	0.18		WT%	XRF
MGO	4.35		WT%	XRF
CAO	7.86		WT%	XRF
NA2O	4.72		WT%	XRF
K2O	1.72		WT%	XRF
P2O5	0.38		WT%	XRF

References

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