Sample 87-4

NavDat sample number 21556 · BASALT

Sample

Latitude	44.2844
Longitude	-114.299
Location	roadcut east of highway ID 75, south of Bayhorse Recreation area
State / province	Idaho
Volcanic field	Challis Volcanics

Age (Ma)	Error	Min	Max	Geologic age	Dated by
45		40	51

Item	Value	Unit	Method
SIO2	50.67	WT%	XRF
TIO2	1.29	WT%	XRF
AL2O3	14.11	WT%	XRF
FE2O3T	11.52	WT%	XRF
MNO	0.18	WT%	XRF
MGO	7.8	WT%	XRF
CAO	8.4	WT%	XRF
NA2O	2.69	WT%	XRF
K2O	1.83	WT%	XRF
P2O5	0.29	WT%	XRF
LOI	1.43	WT%	XRF
TOTAL	100.21	WT%	XRF
RB	82	PPM	XRF
SR	339	PPM	XRF
BA	374	PPM	XRF
Y	29	PPM	XRF
ZR	218	PPM	XRF
V	128	PPM	XRF
NI	132	PPM	XRF
CR	266	PPM	XRF
LA	35.1	PPM	MS
CE	79.7	PPM	MS
PR	9.73	PPM	MS
ND	39.8	PPM	MS
SM	7.83	PPM	MS
EU	1.93	PPM	MS
GD	6	PPM	MS
HO	0.96	PPM	MS
ER	2.48	PPM	MS
YB	2.35	PPM	MS
U	1.27	PPM	MS
TH	5.9	PPM	MS
PB	5.3	PPM	MS
NB	24.6	PPM	MS
HF	5.1	PPM	MS
CS	2.1	PPM	MS
W	0.9	PPM	MS
MO	1.6	PPM	MS
PB206_PB204	18.363		TIMS
PB207_PB204	15.56		TIMS
PB208_PB204	38.6		TIMS