Sample 91-069

NavDat sample number 57320 · GABBRO

Sample

Sample ID	91-069
Rock name	GABBRO
Rock type	PLUTONIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	46.395
Longitude	-121.641
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	50.24		WT%	XRF
TIO2	1		WT%	XRF
AL2O3	19.28		WT%	XRF
FEO	10.13		WT%	XRF
MNO	0.19		WT%	XRF
MGO	4.76		WT%	XRF
CAO	10.28		WT%	XRF
NA2O	3.54		WT%	XRF
K2O	0.47		WT%	XRF
P2O5	0.11		WT%	XRF

References

Swanson, Donald A (1993) Geologic map of the Blue Lake Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1993.