Sample 83315

NavDat sample number 37328 · 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	71.96	WT%	XRF
AL2O3	12.59	WT%	XRF
FEO	4.45	WT%	XRF
MNO	0.08	WT%	XRF
MGO	0.43	WT%	XRF
CAO	0.24	WT%	XRF
NA2O	4.29	WT%	XRF
K2O	5.42	WT%	XRF
P2O5	0.05	WT%	XRF
TOTAL	98.81	WT%	XRF
BA	178	PPM	XRF
ZR	1082	PPM	XRF
NB	100	PPM	XRF
Y	98	PPM	XRF
ND	93.8	PPM	ICPMS
SM	19.7	PPM	ICPMS
PB	20.6	PPM	ICPMS
TH	19.7	PPM	ICPMS
U	2.82	PPM	ICPMS
RB	171	PPM	XRF
SR	16.1	PPM	MS-ID
ND143_ND144	0.512577		TIMS
PB206_PB204	17.842		TIMS
PB207_PB204	15.471		TIMS
PB208_PB204	37.793		TIMS