Sample DJ-197

NavDat sample number 19321

Sample

Sample ID	DJ-197
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	67.39		WT%	XRF
TIO2	0.25		WT%	XRF
AL2O3	16.28		WT%	XRF
FE2O3	1.55		WT%	XRF
MNO	0.02		WT%	XRF
MGO	0.13		WT%	XRF
CAO	1.41		WT%	XRF
NA2O	3.99		WT%	XRF
K2O	5.15		WT%	XRF
P2O5	0.09		WT%	XRF
RB	124		PPM	XRF
SR	729		PPM	XRF
BA	2294		PPM	XRF
Y	32		PPM	XRF
ZR	480		PPM	XRF
V	18		PPM	XRF
CR	1		PPM	XRF
CO	1.3		PPM	XRF
TH	6.3		PPM	XRF

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. .