Sample 202507

NavDat sample number 36877 · DIORITE

Sample

Sample ID	202507
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.0244
Longitude	-110.261
Location	Big Timber Stock, Crazy Mountains
State / province	Montana

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
49.29		49.13	49.45

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	61.18		WT%	XRF
AL2O3	17.39		WT%	XRF
FE2O3	0.62		WT%	XRF
FEO	5.04		WT%	XRF
MGO	1.92		WT%	XRF
CAO	4.55		WT%	XRF
NA2O	4.34		WT%	XRF
K2O	3.52		WT%	XRF
TIO2	0.93		WT%	XRF
P2O5	0.42		WT%	XRF
MNO	0.08		WT%	XRF
RB	78		PPM	EDXRF
SR	783		PPM	EDXRF
Y	25		PPM	EDXRF
ZR	216		PPM	EDXRF
NB	21		PPM	EDXRF
BA	1628		PPM	EDXRF
TOTAL	100		WT%	XRF

References

du Bray, Edward A; Harlan, S S (1996) The Eocene Big Timber Stock, south-central Montana; development ofextensive compositional variation in an arc-related intrusion byside-wall crystallization and cumulate glomerocryst remixing. Geological Society of America Bulletin, vol.108, no.11, pp.1404-1424,Nov 1996 doi:10.1130/0016-7606(1996)108<1404:TEBTSS>2.3.CO;2