Sample 95ID-31A

NavDat sample number 38678

Sample

Sample ID	95ID-31A
Rock type	VOLCANIC
Material	IGNEOUS
Comment	fine grained, porphyritic with phenos of plag, amph, bio, pyroxene, opaques; many phenos are altered and g.m. is cryptocrystalline with plag laths

Latitude	44.5733
Longitude	-114.307
Location	Challis Creek; same location as 95ID-31B and C
State / province	Idaho
Volcanic field	Tl of main effusive phase, Challis Volcanic Group

Age (Ma)	Error	Min	Max	Geologic age	Dated by
49		48	50

Item	Value	Unit	Method
SIO2	62.71	WT%	XRF
TIO2	0.86	WT%	XRF
AL2O3	15.8	WT%	XRF
FEOT	5.6	WT%	XRF
MNO	0.09	WT%	XRF
MGO	2.05	WT%	XRF
CAO	6.29	WT%	XRF
NA2O	3.25	WT%	XRF
K2O	3.05	WT%	XRF
P2O5	0.29	WT%	XRF
LOI	3.9	WT%	XRF
TOTAL	100	WT%	XRF
NI	4	PPM	XRF
CR	61	PPM	XRF
SC	16	PPM	XRF
V	137	PPM	XRF
GA	22	PPM	XRF
CU	1	PPM	XRF
ZN	79	PPM	XRF
BA	1269	PPM	ICPMS
RB	73	PPM	ICPMS
SR	624	PPM	ICPMS
U	2.59	PPM	ICPMS
PB	15.6	PPM	ICPMS
CS	1.59	PPM	ICPMS
TH	9.63	PPM	ICPMS
ZR	227	PPM	XRF
Y	24	PPM	ICPMS
NB	22.23	PPM	XRF
HF	5.79	PPM	ICPMS
TA	1.31	PPM	ICPMS
LA	45.98	PPM	ICPMS
CE	81.61	PPM	ICPMS
PR	8.97	PPM	ICPMS
ND	34.34	PPM	ICPMS
SM	6.87	PPM	ICPMS
EU	1.74	PPM	ICPMS
GD	1.11	PPM	ICPMS
TB	0.82	PPM	ICPMS
DY	4.69	PPM	ICPMS
HO	0.9	PPM	ICPMS
ER	2.53	PPM	ICPMS
TM	0.34	PPM	ICPMS
YB	2.17	PPM	ICPMS
LU	0.34	PPM	ICPMS
SR87_SR86	0.70856		TIMS
ND143_ND144	0.512		TIMS