Sample 797-18C

NavDat sample number 13846

Sample

Sample ID	797-18C
Rock type	PLUTONIC
Material	IGNEOUS

Location

Latitude	45.64
Longitude	-114.418
State / province	Montana
Volcanic field	Challis epizonal plutonics and volcanics

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
50		45	55

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
RB	288.4		PPM	XRF
SR	46.86		PPM	XRF
SR87_SR86	0.7185			TIMS
D18O	8.4		PERMILL	MS
DELTA_D	-118			MS

References

Criss, Robert E; Fleck, Robert J (1987) Petrogenesis, geochronology, and hydrothermal systems of the northern Idaho Batholith and adjacent areas based on (super 18?O/ (super 16?O, D/H, (super 87?Sr/ (super 86?Sr, K-Ar, and (super 40?Ar/ (super 39?Ar studies. U. S. Geological Survey Professional Paper, Report: P 1436, pp.95-137, 1987