Sample 89-109

NavDat sample number 22315 · DIORITE

Sample

Sample ID	89-109
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4247
Longitude	-121.773
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	62.89		WT%	XRF
TIO2	0.72		WT%	XRF
AL2O3	17.03		WT%	XRF
FEO	4.89		WT%	XRF
MNO	0.08		WT%	XRF
MGO	2.82		WT%	XRF
CAO	5.6		WT%	XRF
NA2O	4.25		WT%	XRF
K2O	1.51		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.