Sample R-9

NavDat sample number 19266

Sample

Sample ID	R-9
Rock type	VOLCANIC
Material	IGNEOUS

Location

Latitude	38.7775
Longitude	-105.509
Location	Guffey Volcanic Center
State / province	Colorado
Volcanic field	39-Mile Volcanic Field

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
35		33.9	36.1

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	47.15		WT%	XRF
TIO2	1.73		WT%	XRF
AL2O3	13.9		WT%	XRF
FE2O3	5.22		WT%	XRF
FEO	6.46		WT%	XRF
MNO	0.18		WT%	XRF
MGO	7.84		WT%	XRF
CAO	10.12		WT%	XRF
NA2O	2.61		WT%	XRF
K2O	1.44		WT%	XRF
P2O5	0.61		WT%	XRF
LOI	3.04		WT%	XRF
RB	99		PPM	XRF
SR	843		PPM	XRF
BA	1101		PPM	XRF
Y	25		PPM	XRF
ZR	110		PPM	XRF
V	243		PPM	XRF
NI	54		PPM	XRF
CR	127		PPM	XRF
CO	44		PPM	XRF
HF	5		PPM	XRF
TH	5.2		PPM	XRF
TA	1.5		PPM	XRF
U	0.7		PPM	XRF
LA	45.9		PPM	INAA
SM	8.54		PPM	INAA
EU	2.65		PPM	INAA
TB	1		PPM	INAA
YB	2.42		PPM	INAA
LU	0.33		PPM	INAA

References

Wobus, Reinhard A; Mochel, David W; Mertzman, Stanley A; Eide, Elizabeth A; Rothwarf, Miriam T; Loeffler, Bruce M; Johnson, David A; Keating, Gordon N; Sultze, Kimberly; Benjamin, Anne E; Venzke, Edward A; Filson, Tammy (1990) Geochemistry of high-potassium rocks from the mid-Tertiary Guffey volcanic center, Thirtynine Mile volcanic field, central Colorado; with Suppl. Data 90-15. Geology Boulder. 18; 7, Pages 642-645. 1990. .