Sample K-381

NavDat sample number 37307 · RHYOLITE

Sample

Latitude	30.2129
Longitude	-103.651
Location	Davis Mountain volcanic field
State / province	Texas

Age (Ma)	Error	Min	Max	Geologic age	Dated by
39		35.1	42.9

Item	Value	Unit	Method
ND	70.7	PPM	ICPMS
SM	15.8	PPM	ICPMS
PB	5.9	PPM	ICPMS
TH	3.7	PPM	ICPMS
U	1.5	PPM	ICPMS
SIO2	49.59	WT%	XRF
TIO2	3.62	WT%	XRF
AL2O3	14.73	WT%	XRF
FEO	12.04	WT%	XRF
MNO	0.21	WT%	XRF
MGO	2.02	WT%	XRF
CAO	7.67	WT%	XRF
NA2O	3.9	WT%	XRF
K2O	2.9	WT%	XRF
P2O5	2.08	WT%	XRF
LOI	1.78	WT%	XRF
TOTAL	100.29	WT%	XRF
BA	1433	PPM	XRF
ZR	357	PPM	XRF
NB	26	PPM	XRF
Y	64	PPM	XRF
SR	657	PPM	XRF
RB	89	PPM	XRF
SR87_SR86	0.70569		TIMS
ND143_ND144	0.512635		TIMS
PB206_PB204	17.683		TIMS
PB207_PB204	15.464		TIMS
PB208_PB204	37.465		TIMS