Sample 89-086

NavDat sample number 22316 · DIORITE

Sample

Sample ID	89-086
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3925
Longitude	-121.797
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	62.83		WT%	XRF
TIO2	0.82		WT%	XRF
AL2O3	17.61		WT%	XRF
FEO	5.53		WT%	XRF
MNO	0.09		WT%	XRF
MGO	2.57		WT%	XRF
CAO	5.61		WT%	XRF
NA2O	3.95		WT%	XRF
K2O	0.76		WT%	XRF
P2O5	0.22		WT%	XRF

References

Swanson, Donald A (1991) Geologic map of the Tower Rock Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1991.