Sample HM-492

NavDat sample number 125498 · MINETTE

Sample

Sample ID	HM-492
Rock name	MINETTE
Rock type	PLUTONIC
Composition	EXOTIC
Material	IGNEOUS

Location

Latitude	47.4631
Longitude	-110.56
Location	Highwood Mountains
State / province	Montana

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
51		50	53

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
MGO	7.96		WT%	ICPAES
LA	41.6		PPM	ICPAES
CE	75.6		PPM	ICPAES
ND	37.1		PPM	ICPAES
SM	6.64		PPM	ICPAES
EU	1.96		PPM	ICPAES
GD	5.45		PPM	ICPAES
DY	3.37		PPM	ICPAES
YB	1.41		PPM	ICPAES
LU	0.18		PPM	ICPAES
RB	182		PPM	XRF
SR	1186		PPM	ICPAES
SM	6.76		PPM	ICPAES
ND	37.4		PPM	ICPAES
SR87_SR86	0.708277			MS
ND143_ND144	0.511653			MS

References

O'Brien, Hugh E; Irving, Anthony J; McCallum, I S; Thirlwall, MatthewF (1995) Strontium, neodymium, and lead isotope evidence for the interaction ofpost-subduction asthenospheric potassic mafic magmas of the HighwoodMountains, Montana, USA, with ancient Wyoming craton lithosphericmantle. Geochimica et Cosmochimica Acta, vol.59, no.21, pp.4539-4556, Nov1995 doi:10.1016/0016-7037(95)99266-J