Sample 87-13

NavDat sample number 21565 · ANDESITE

Sample

Latitude	44.1477
Longitude	-114.157
Location	near Road Creek, east of Bear Creek, south of Anderson Peak
State / province	Idaho
Volcanic field	Challis Volcanics

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

Item	Value	Unit	Method
SIO2	55.73	WT%	XRF
TIO2	0.79	WT%	XRF
AL2O3	12.94	WT%	XRF
FE2O3T	8.26	WT%	XRF
MNO	0.14	WT%	XRF
MGO	7.35	WT%	XRF
CAO	6.8	WT%	XRF
NA2O	1.99	WT%	XRF
K2O	3.61	WT%	XRF
P2O5	0.39	WT%	XRF
LOI	1.46	WT%	XRF
TOTAL	99.46	WT%	XRF
RB	144	PPM	XRF
SR	613	PPM	XRF
BA	1408	PPM	XRF
Y	19	PPM	XRF
ZR	206	PPM	XRF
V	148	PPM	XRF
NI	107	PPM	XRF
CR	433	PPM	XRF
LA	36.8	PPM	MS
CE	72.6	PPM	MS
PR	8.4	PPM	MS
ND	34.9	PPM	MS
SM	7.7	PPM	MS
EU	1.8	PPM	MS
GD	5.71	PPM	MS
HO	0.81	PPM	MS
ER	2.1	PPM	MS
YB	1.98	PPM	MS
U	3.17	PPM	MS
TH	12.3	PPM	MS
PB	25.5	PPM	MS
NB	14.7	PPM	MS
HF	5.4	PPM	MS
CS	5.4	PPM	MS
W	3	PPM	MS
MO	2.5	PPM	MS
PB206_PB204	18.571		TIMS
PB207_PB204	15.619		TIMS
PB208_PB204	39.018		TIMS