Sample DJ-82

NavDat sample number 19323

Sample

Sample ID	DJ-82
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	70.08		WT%	XRF
TIO2	0.08		WT%	XRF
AL2O3	13.7		WT%	XRF
FE2O3	0.54		WT%	XRF
MNO	0.07		WT%	XRF
CAO	1.09		WT%	XRF
NA2O	3.84		WT%	XRF
K2O	4.46		WT%	XRF
P2O5	0.01		WT%	XRF
RB	134		PPM	XRF
SR	379		PPM	XRF
BA	891		PPM	XRF
Y	13		PPM	XRF
ZR	133		PPM	XRF
V	4		PPM	XRF
CR	1		PPM	XRF
CO	3		PPM	XRF
SC	1.3		PPM	XRF
HF	3.4		PPM	XRF
TA	2.6		PPM	XRF
U	4.6		PPM	XRF
LA	10.9		PPM	INAA
CE	22		PPM	INAA
NI	9		PPM	INAA
SM	1.76		PPM	INAA
EU	0.59		PPM	INAA
TB	0.4		PPM	INAA
YB	1.53		PPM	INAA
LU	0.28		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. .