Sample 202509

NavDat sample number 36833 · DIORITE

Sample

Sample ID	202509
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	56.5		WT%	XRF
AL2O3	15.88		WT%	XRF
FE2O3	0.86		WT%	XRF
FEO	6.99		WT%	XRF
MGO	5.04		WT%	XRF
CAO	6.49		WT%	XRF
NA2O	3.83		WT%	XRF
K2O	2.65		WT%	XRF
TIO2	1.21		WT%	XRF
P2O5	0.44		WT%	XRF
MNO	0.11		WT%	XRF
RB	64		PPM	EDXRF
SR	842		PPM	EDXRF
Y	25		PPM	EDXRF
ZR	149		PPM	EDXRF
NB	23		PPM	EDXRF
BA	1248		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