Sample 202505

NavDat sample number 36832 · DIORITE

Sample

Sample ID	202505
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	53.09		WT%	XRF
AL2O3	17.39		WT%	XRF
FE2O3	1.07		WT%	XRF
FEO	8.65		WT%	XRF
MGO	4.21		WT%	XRF
CAO	7.52		WT%	XRF
NA2O	3.59		WT%	XRF
K2O	1.88		WT%	XRF
TIO2	1.86		WT%	XRF
P2O5	0.59		WT%	XRF
MNO	0.15		WT%	XRF
RB	45		PPM	EDXRF
SR	932		PPM	EDXRF
Y	28		PPM	EDXRF
ZR	80		PPM	EDXRF
NB	16		PPM	EDXRF
BA	1030		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