Sample 91-040

NavDat sample number 57372 · DIORITE

Sample

Sample ID	91-040
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4373
Longitude	-121.673
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	65.19		WT%	XRF
TIO2	0.62		WT%	XRF
AL2O3	16.74		WT%	XRF
FEO	4.35		WT%	XRF
MNO	0.05		WT%	XRF
MGO	2.35		WT%	XRF
CAO	4.89		WT%	XRF
NA2O	4.48		WT%	XRF
K2O	1.15		WT%	XRF
P2O5	0.19		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.