Sample K-343

NavDat sample number 37306 · 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
37		33.3	40.7

Item	Value	Unit	Method
ND	67.9	PPM	ICPMS
SM	14.7	PPM	ICPMS
PB	4.7	PPM	ICPMS
TH	3.8	PPM	ICPMS
U	1.34	PPM	ICPMS
SIO2	50.44	WT%	XRF
TIO2	3.68	WT%	XRF
AL2O3	15.75	WT%	XRF
FEO	12.29	WT%	XRF
MNO	0.15	WT%	XRF
MGO	1.69	WT%	XRF
CAO	7.26	WT%	XRF
NA2O	3.02	WT%	XRF
K2O	2.24	WT%	XRF
P2O5	1.91	WT%	XRF
LOI	3.11	WT%	XRF
TOTAL	99.04	WT%	XRF
BA	923	PPM	XRF
ZR	391	PPM	XRF
NB	36	PPM	XRF
Y	59	PPM	XRF
SR	754	PPM	XRF
RB	36	PPM	XRF
SR87_SR86	0.70409		TIMS
ND143_ND144	0.51267		TIMS
PB206_PB204	17.629		TIMS
PB207_PB204	15.466		TIMS
PB208_PB204	37.35		TIMS