Sample 202731

NavDat sample number 36855 · DIORITE

Sample

Sample ID	202731
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	52.45		WT%	XRF
AL2O3	17.62		WT%	XRF
FE2O3	0.94		WT%	XRF
FEO	7.61		WT%	XRF
MGO	5.78		WT%	XRF
CAO	8.82		WT%	XRF
NA2O	3.68		WT%	XRF
K2O	0.91		WT%	XRF
TIO2	1.53		WT%	XRF
P2O5	0.44		WT%	XRF
MNO	0.23		WT%	XRF
RB	28		PPM	EDXRF
SR	825		PPM	EDXRF
Y	2		PPM	EDXRF
ZR	94		PPM	EDXRF
NB	18		PPM	EDXRF
BA	552		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