Sample GN3

NavDat sample number 54626 · VITROPHERE

Sample

Sample ID	GN3
Rock name	VITROPHERE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Gold Note Ridge, El Dorado county, California [SE 1/4, SE 1/4, SW 1/4, SE 1/4, Sec. 10, T8N, R14E] Densley welded, devitrified, 1 m below swiss cheese zone. Intermediate between upper and lower phase of the Nine Hill Tuff.

Age (Ma)	Error	Min	Max	Geologic age	Dated by
22.78		19.21	26.34

Item	Value	Unit	Method
SIO2	75.84	WT%	XRF
TIO2	0.24	WT%	XRF
AL2O3	14.38	WT%	XRF
FEO	1.99	WT%	XRF
MNO	0.04	WT%	XRF
MGO	-0.39	WT%	XRF
CAO	0.31	WT%	XRF
NA2O	3.83	WT%	XRF
K2O	5.24	WT%	XRF
P2O5	-0.07	WT%	XRF
ZN	73	PPM	XRF
GA	21	PPM	XRF
RB	202	PPM	XRF
SR	16	PPM	XRF
Y	38	PPM	XRF
ZR	375	PPM	XRF
NB	29	PPM	XRF
CS	8	PPM	XRF
BA	322	PPM	XRF
PB	45	PPM	XRF
TH	32	PPM	XRF
LA	60	PPM	XRF
CE	109	PPM	XRF
PR	26	PPM	XRF
ND	53	PPM	XRF
SM	14	PPM	XRF