Sample 90-038

NavDat sample number 57199 · DIORITE

Sample

Sample ID	90-038
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3069
Longitude	-121.766
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	64.94		WT%	XRF
TIO2	0.74		WT%	XRF
AL2O3	17.18		WT%	XRF
FEO	5.06		WT%	XRF
MNO	0.07		WT%	XRF
MGO	0.78		WT%	XRF
CAO	5.81		WT%	XRF
NA2O	3.9		WT%	XRF
K2O	1.33		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.