Sample HSP-2

NavDat sample number 29287 · BASALT

Sample

Sample ID	HSP-2
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	alkali olivine basalt; aa flow erupted from cinder cone; nearly aphyritic; rare phenos of olivine and plag; intersertal groundmass of plag, olivine, glass, rare pyroxene, and stable K-feldspar; contains numerous granitic xenoliths in various stages of dissaggregation near its vent; location given is for the vent

Latitude	43.525
Longitude	-115.566
Location	Western Snake River Plain
State / province	Idaho
Volcanic field	Boise River Group 2, Smith Creek basalt

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.35		0.2	0.5

Item	Value	Unit	Method
SIO2	46.8	WT%	EPMA
TIO2	2.7	WT%	EPMA
AL2O3	17.1	WT%	EPMA
FEOT	13.68	WT%	EPMA
MNO	0.16	WT%	EPMA
MGO	7.38	WT%	EPMA
CAO	7.91	WT%	EPMA
NA2O	1.81	WT%	EPMA
K2O	1.07	WT%	EPMA
P2O5	0.38	WT%	EPMA
TOTAL	99	WT%	EPMA
NB	34	PPM	XRF
ZR	184	PPM	XRF
Y	38	PPM	XRF
SR	340	PPM	XRF
RB	20	PPM	XRF
NI	129	PPM	XRF
CR	177	PPM	XRF
V	242	PPM	XRF
SC	23	PPM	XRF
BA	779	PPM	XRF
LA	16.33	PPM	INAA
CE	39.2	PPM	INAA
ND	26	PPM	INAA
SM	6.1	PPM	INAA
EU	2.08	PPM	INAA
TB	0.935	PPM	INAA
YB	3.06	PPM	INAA
LU	0.455	PPM	INAA
HF	4.33	PPM	INAA
TA	1.57	PPM	INAA
U	0.35	PPM	INAA
TH	1.22	PPM	INAA