Sample 91-041

NavDat sample number 57374 · GRANODIORITE

Sample

Sample ID	91-041
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4407
Longitude	-121.65
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
20		15	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	65.01		WT%	XRF
TIO2	0.64		WT%	XRF
AL2O3	17.5		WT%	XRF
FEO	4.44		WT%	XRF
MNO	0.1		WT%	XRF
MGO	1.93		WT%	XRF
CAO	5.46		WT%	XRF
NA2O	4.07		WT%	XRF
K2O	0.66		WT%	XRF
P2O5	0.19		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.