Sample BU7

NavDat sample number 54502 · TUFF

Sample

Sample ID	BU7
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Buckhorn Mine, Washoe County, Nevada-Lassen County California. [NE1/4, SE1/4, NE1/4, SE1/4, Sec. 31, T22N, R18E], northward extension of Yellow Rock across gulley. Although it rests on tuff Porcupine Mountain, this is not the Nine Hill Tuff. Reference: McJannett, 1957; Cinque, 1979

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		23	28

Item	Value	Unit	Method
SIO2	74.16	WT%	XRF
TIO2	0.14	WT%	XRF
AL2O3	13.38	WT%	XRF
FEO	1.38	WT%	XRF
MNO	0.04	WT%	XRF
MGO	-0.4	WT%	XRF
CAO	0.58	WT%	XRF
NA2O	4.01	WT%	XRF
K2O	5.48	WT%	XRF
P2O5	-0.07	WT%	XRF
CU	-5	PPM	XRF
ZN	56	PPM	XRF
GA	23	PPM	XRF
RB	194	PPM	XRF
SR	70	PPM	XRF
Y	17	PPM	XRF
ZR	212	PPM	XRF
NB	19	PPM	XRF
CS	-5	PPM	XRF
BA	595	PPM	XRF
PB	33	PPM	XRF
TH	19	PPM	XRF
LA	30	PPM	XRF
CE	30	PPM	XRF
PR	-8	PPM	XRF
ND	10	PPM	XRF
SM	-8	PPM	XRF