Sample 202311

NavDat sample number 36813 · DIORITE

Sample

Sample ID	202311
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	50.13		WT%	XRF
AL2O3	12.89		WT%	XRF
FE2O3	1.27		WT%	XRF
FEO	10.27		WT%	XRF
MGO	9.51		WT%	XRF
CAO	8.94		WT%	XRF
NA2O	2.64		WT%	XRF
K2O	1.44		WT%	XRF
TIO2	2.09		WT%	XRF
P2O5	0.6		WT%	XRF
MNO	0.2		WT%	XRF
RB	36		PPM	EDXRF
SR	737		PPM	EDXRF
Y	28		PPM	EDXRF
ZR	48		PPM	EDXRF
NB	21		PPM	EDXRF
BA	928		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