Sample D85

NavDat sample number 19332

Sample

Sample ID	D85
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	54.58		WT%	XRF
TIO2	1.14		WT%	XRF
AL2O3	18.15		WT%	XRF
FE2O3	4.65		WT%	XRF
FEO	3.72		WT%	XRF
MNO	0.14		WT%	XRF
MGO	2.97		WT%	XRF
CAO	6.03		WT%	XRF
NA2O	4.12		WT%	XRF
K2O	3.85		WT%	XRF
RB	90		PPM	XRF
SR	1329		PPM	XRF
BA	1900		PPM	XRF
Y	29		PPM	XRF
CR	7		PPM	XRF
CO	22		PPM	XRF
SC	15		PPM	XRF
HF	5.8		PPM	XRF
TA	1.8		PPM	XRF
U	1.9		PPM	XRF
LA	69.6		PPM	INAA
SM	9.79		PPM	INAA
EU	2.9		PPM	INAA
TB	1.1		PPM	INAA
YB	2.76		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. .