Sample 90-001

NavDat sample number 57176 · GRANODIORITE

Sample

Sample ID	90-001
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3577
Longitude	-121.799
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	63.29		WT%	XRF
TIO2	0.76		WT%	XRF
AL2O3	17.33		WT%	XRF
FEO	6.09		WT%	XRF
MNO	0.02		WT%	XRF
MGO	2.45		WT%	XRF
CAO	4.34		WT%	XRF
NA2O	3.71		WT%	XRF
K2O	1.8		WT%	XRF
P2O5	0.2		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.