Sample MHBWA1-M

NavDat sample number 85650

Sample

Sample ID	MHBWA1-M
Material	notfound
Comment	Very light brown vitric partially welded tuff with very conspicuous shards and scarce to common very light gray pumice to 4/1.5 mm. Scarce to rare lithics to 3 mm; three dark green equant to elongate clinopyroxene prisms, and one bronze biotite observed. Description is from thin section butt; hand sample unavailable.

Location

Latitude	36.9367
Longitude	-116.703
State / province	NEVADA

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
7.6		7.65	7.55

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
BAO	196.947		PPM	XRF
BA	176.4		PPM	XRF
CE2O3	185.178		PPM	XRF
FE2O3	2.29		WT%	XRF
LA2O3	104.528		PPM	XRF
NB2O5	108.463		PPM	XRF
ND2O3	72.1038		PPM	XRF
RB2O	237.965		PPM	XRF
SRO	141.201		PPM	XRF
Y2O3	88.7032		PPM	XRF
ZNO	150.238		PPM	XRF
ZN	120.7		PPM	XRF
ZRO2	713.493		PPM	XRF
ZR	528.2		PPM	XRF

References

Fleck, R. J., Lanphere, M.A., Sawyer, D.A., and Warren, R.G. Detailed 40Ar/39Ar and K-Ar chronostratigraphy of the Paintbrush Group and younger units of the southwestern Nevada volcanic field.