Sample R-27

NavDat sample number 19282

Sample

Sample ID	R-27
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	62.05		WT%	XRF
TIO2	0.46		WT%	XRF
AL2O3	18.08		WT%	XRF
FE2O3	3.5		WT%	XRF
FEO	0.58		WT%	XRF
MNO	0.06		WT%	XRF
MGO	0.98		WT%	XRF
CAO	3.43		WT%	XRF
NA2O	4.15		WT%	XRF
K2O	4.35		WT%	XRF
P2O5	0.24		WT%	XRF
LOI	1.46		WT%	XRF
RB	108		PPM	XRF
SR	1139		PPM	XRF
BA	2036		PPM	XRF
Y	13		PPM	XRF
ZR	267		PPM	XRF
V	43		PPM	XRF
NI	3		PPM	XRF
CR	13		PPM	XRF
CO	6.4		PPM	XRF
SC	3.6		PPM	XRF
HF	7		PPM	XRF
TH	13		PPM	XRF
TA	1.8		PPM	XRF
U	2.8		PPM	XRF
LA	85		PPM	INAA
CE	133		PPM	INAA
NI	44		PPM	INAA
SM	7		PPM	INAA
EU	2.29		PPM	INAA
TB	0.5		PPM	INAA
YB	2.51		PPM	INAA
LU	0.41		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. .