Sample 91-082

NavDat sample number 57380 · DIORITE

Sample

Sample ID	91-082
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3802
Longitude	-121.629
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	66.87		WT%	XRF
TIO2	0.57		WT%	XRF
AL2O3	16.64		WT%	XRF
FEO	4		WT%	XRF
MNO	0.06		WT%	XRF
MGO	1.82		WT%	XRF
CAO	4.1		WT%	XRF
NA2O	4.58		WT%	XRF
K2O	1.19		WT%	XRF
P2O5	0.17		WT%	XRF

References

Swanson, Donald A (1993) Geologic map of the Blue Lake Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1993.