Sample GK-10.1

NavDat sample number 19344

Sample

Sample ID	GK-10.1
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	65.03		WT%	XRF
TIO2	0.56		WT%	XRF
AL2O3	16.09		WT%	XRF
FE2O3	3.71		WT%	XRF
MNO	0.05		WT%	XRF
MGO	0.34		WT%	XRF
CAO	2.64		WT%	XRF
NA2O	3.64		WT%	XRF
K2O	5.26		WT%	XRF
P2O5	0.23		WT%	XRF
LOI	1.42		WT%	XRF
RB	144		PPM	XRF
SR	803		PPM	XRF
BA	2340		PPM	XRF
Y	35		PPM	XRF
ZR	274		PPM	XRF
NI	8		PPM	XRF
CR	23		PPM	XRF
CO	4		PPM	XRF
SC	6.5		PPM	XRF
HF	7.8		PPM	XRF
TH	11		PPM	XRF
TA	1.3		PPM	XRF
U	2.4		PPM	XRF
LA	86.9		PPM	INAA
CE	152		PPM	INAA
NI	55		PPM	INAA
SM	8.41		PPM	INAA
EU	2.07		PPM	INAA
TB	1.1		PPM	INAA
YB	3		PPM	INAA
LU	0.43		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. .