Sample 90-096

NavDat sample number 57148 · DIORITE

Sample

Sample ID	90-096
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2669
Longitude	-121.857
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		18	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.2		WT%	XRF
TIO2	1.1		WT%	XRF
AL2O3	17.52		WT%	XRF
FEO	7.78		WT%	XRF
MNO	0.13		WT%	XRF
MGO	3.39		WT%	XRF
CAO	7.59		WT%	XRF
NA2O	3.08		WT%	XRF
K2O	0.99		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.