Sample 90-117

NavDat sample number 57189 · GRANODIORITE

Sample

Sample ID	90-117
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3473
Longitude	-121.793
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	64.6		WT%	XRF
TIO2	0.76		WT%	XRF
AL2O3	17.42		WT%	XRF
FEO	5.02		WT%	XRF
MNO	0.02		WT%	XRF
MGO	2.46		WT%	XRF
CAO	4.43		WT%	XRF
NA2O	3.69		WT%	XRF
K2O	1.4		WT%	XRF
P2O5	0.19		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.