Sample 81022

NavDat sample number 37323 · 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
36.8		33.12	40.48

Item	Value	Unit	Method
SIO2	73.48	WT%	XRF
AL2O3	11.03	WT%	XRF
FEO	4.97	WT%	XRF
MNO	0.12	WT%	XRF
MGO	0.01	WT%	XRF
CAO	0.22	WT%	XRF
NA2O	4.72	WT%	XRF
K2O	5.05	WT%	XRF
P2O5	0.02	WT%	XRF
TOTAL	98.9	WT%	XRF
BA	22	PPM	XRF
ZR	1008	PPM	XRF
NB	83	PPM	XRF
Y	93	PPM	XRF
ND	101.7	PPM	ICPMS
SM	24.6	PPM	ICPMS
PB	25.2	PPM	ICPMS
TH	19.5	PPM	ICPMS
U	3.39	PPM	ICPMS
RB	194	PPM	XRF
SR	5.6	PPM	MS-ID
ND143_ND144	0.512617		TIMS
PB206_PB204	17.996		TIMS
PB207_PB204	15.484		TIMS
PB208_PB204	37.841		TIMS