Sample 202613

NavDat sample number 36838 · DIORITE

Sample

Sample ID	202613
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	55.62		WT%	XRF
AL2O3	17.83		WT%	XRF
FE2O3	0.94		WT%	XRF
FEO	7.58		WT%	XRF
MGO	3.35		WT%	XRF
CAO	6.63		WT%	XRF
NA2O	3.95		WT%	XRF
K2O	2.1		WT%	XRF
TIO2	1.41		WT%	XRF
P2O5	0.47		WT%	XRF
MNO	0.13		WT%	XRF
RB	44		PPM	EDXRF
SR	980		PPM	EDXRF
Y	17		PPM	EDXRF
ZR	121		PPM	EDXRF
NB	15		PPM	EDXRF
BA	1476		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