Sample HSP-52

NavDat sample number 29330 · BASALT

Sample

Sample ID	HSP-52
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	alkali olivine basalt; erupted from small shield volcano 1.5 km south of cinder cone which sourced the other Smith Praire units; porphyritic with phenos of plag and olivine in intersertal to intergranular groundmass of plag, olivine, pyroxene, sanidine, glass and opaques; given location is for the vent

Latitude	43.509
Longitude	-115.505
Location	Western Snake River Plain
State / province	Idaho
Volcanic field	Boise River Group 2, Smith Praire basalt, unit 3

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.2		0.05	0.35

Item	Value	Unit	Method
SIO2	47.9	WT%	EPMA
TIO2	1.97	WT%	EPMA
AL2O3	16.8	WT%	EPMA
FEOT	11.59	WT%	EPMA
MNO	0.13	WT%	EPMA
MGO	7.35	WT%	EPMA
CAO	9.45	WT%	EPMA
NA2O	2.66	WT%	EPMA
K2O	1.35	WT%	EPMA
P2O5	0.33	WT%	EPMA
TOTAL	99.51	WT%	EPMA
NB	25	PPM	XRF
ZR	160	PPM	XRF
Y	29	PPM	XRF
SR	408	PPM	XRF
RB	32	PPM	XRF
NI	90	PPM	XRF
CR	147	PPM	XRF
V	221	PPM	XRF
SC	30	PPM	XRF
BA	654	PPM	XRF
LA	18.29	PPM	INAA
CE	38.3	PPM	INAA
ND	21.2	PPM	INAA
SM	5.05	PPM	INAA
EU	1.724	PPM	INAA
TB	0.716	PPM	INAA
YB	2.4	PPM	INAA
LU	0.362	PPM	INAA
HF	3.62	PPM	INAA
TA	1.71	PPM	INAA
U	0.42	PPM	INAA
TH	1.71	PPM	INAA
SR87_SR86	0.705215		TIMS
ND143_ND144	0.512641		TIMS
PB206_PB204	18.603		TIMS
PB207_PB204	15.591		TIMS
PB208_PB204	38.87		TIMS
D18O	6.02	PERMILL	MS