Sample 90-095

NavDat sample number 57138 · GABBRO

Sample

Sample ID	90-095
Rock name	GABBRO
Rock type	PLUTONIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	46.26
Longitude	-121.85
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	52.57		WT%	XRF
TIO2	1		WT%	XRF
AL2O3	17.83		WT%	XRF
FEO	8.63		WT%	XRF
MNO	0.16		WT%	XRF
MGO	6.14		WT%	XRF
CAO	10.25		WT%	XRF
NA2O	2.66		WT%	XRF
K2O	0.56		WT%	XRF
P2O5	0.18		WT%	XRF

References

Swanson, Donald A (1992) Geologic map of the McCoy Peak Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1992.