Sample 975

NavDat sample number 66214 · RHYOLITE

Sample

Sample ID	975
Alternate ID	AZB-316
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Welded tuff

Location

Latitude	43.5636
Longitude	-117.831
State / province	Oregon
Formation	Wildcat Creek Welded Ash-Flow Tuff
Elevation	1396

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
13.8		11.2	16.4	middle Miocene

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	72.8		WT%	XRF
AL2O3	12.82		WT%	XRF
TIO2	0.35		WT%	XRF
FEOT	3.39		WT%	XRF
MNO	0.12		WT%	XRF
CAO	0.36		WT%	XRF
MGO	0.38		WT%	XRF
K2O	4.3		WT%	XRF
NA2O	5.41		WT%	XRF
P2O5	0.06		WT%	XRF
LOI	1.47		WT%	XRF
TOTAL	100		WT%	XRF
CR	12		PPM	XRF
BA	1720		PPM	XRF
RB	99		PPM	XRF
SR	60		PPM	XRF
ZR	503		PPM	XRF
Y	101		PPM	XRF
NB	53		PPM	XRF

References

Ferns, Mark L; McConnell, Vicki S; Madin, Ian P; Johnson, Jenda A (2006) Geology of the upper Grande Ronde River basin, Union County, Oregon. Open File Report - State of Oregon, Department of Geology and Mineral Industries. 2006.