Sample 81020

NavDat sample number 37321 · 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
36.6		32.94	40.26

Item	Value	Unit	Method
SIO2	64.5	WT%	XRF
AL2O3	17.08	WT%	XRF
FEO	4.29	WT%	XRF
MNO	0.08	WT%	XRF
MGO	0.7	WT%	XRF
CAO	1.99	WT%	XRF
NA2O	5.31	WT%	XRF
K2O	4.79	WT%	XRF
P2O5	0.34	WT%	XRF
TOTAL	99.53	WT%	XRF
BA	1294	PPM	XRF
ZR	621	PPM	XRF
NB	45	PPM	XRF
Y	48	PPM	XRF
ND	55.6	PPM	ICPMS
SM	11	PPM	ICPMS
PB	16.6	PPM	ICPMS
TH	17.4	PPM	ICPMS
U	3.59	PPM	ICPMS
SR	316	PPM	XRF
RB	95	PPM	XRF
SR87_SR86	0.70547		TIMS
ND143_ND144	0.512645		TIMS
PB206_PB204	17.889		TIMS
PB207_PB204	15.477		TIMS
PB208_PB204	37.63		TIMS