Sample 314

NavDat sample number 17786 · RHYODACITE

Sample

Sample ID	314
Rock name	RHYODACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Maximum and minimum ages given are approximations based on average error of previous K-Ar dating.

Location

Latitude	33.6906
Longitude	-107.942
Location	Razorback formation rhyolite member
State / province	New Mexico

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
29		27	32

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.71		WT%	EDXRF
TIO2	0.6		WT%	EDXRF
AL2O3	15		WT%	EDXRF
FEO	3.62		WT%	EDXRF
MGO	1		WT%	EDXRF
CAO	2.82		WT%	EDXRF
NA2O	4.21		WT%	EDXRF
K2O	3.78		WT%	EDXRF
TOTAL	97.74		WT%	EDXRF
BA	1862		PPM	EDXRF
CR	22		PPM	EDXRF
NI	16		PPM	EDXRF
RB	104		PPM	EDXRF
SR	411		PPM	EDXRF
V	60		PPM	EDXRF
Y	28		PPM	EDXRF
ZN	73		PPM	EDXRF
ZR	310		PPM	EDXRF

References

Bornhorst, Theodore Joseph (1980) Major- and trace-element geochemistry and mineralogy of upper Eocene to Quaternary volcanic rocks of the Mogollon-Datil volcanic field, southwestern New Mexico.