Sample 87-127

NavDat sample number 57158 · DIORITE

Sample

Sample ID	87-127
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.349
Longitude	-121.825
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	60.56		WT%	XRF
TIO2	0.89		WT%	XRF
AL2O3	18.6		WT%	XRF
FEO	5.76		WT%	XRF
MNO	0.1		WT%	XRF
MGO	2.49		WT%	XRF
CAO	5.44		WT%	XRF
NA2O	4.78		WT%	XRF
K2O	1.14		WT%	XRF
P2O5	0.23		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.