Sample 808-04C

NavDat sample number 13949

Sample

Sample ID	808-04C
Rock type	PLUTONIC
Material	IGNEOUS

Location

Latitude	45.9467
Longitude	-114.205
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	76.6		PPM	XRF
SR	114		PPM	XRF
SR87_SR86	0.73747			TIMS

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