Sample HSP-7

NavDat sample number 29286 · BASALT

Sample

Sample ID	HSP-7
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	47.2	WT%	EPMA
TIO2	2.56	WT%	EPMA
AL2O3	15.8	WT%	EPMA
FEOT	12.68	WT%	EPMA
MNO	0.17	WT%	EPMA
MGO	7.34	WT%	EPMA
CAO	9.42	WT%	EPMA
NA2O	2.73	WT%	EPMA
K2O	1.36	WT%	EPMA
P2O5	0.33	WT%	EPMA
TOTAL	99.64	WT%	EPMA
NB	20	PPM	XRF
ZR	144	PPM	XRF
Y	34	PPM	XRF
SR	360	PPM	XRF
RB	22	PPM	XRF
NI	93	PPM	XRF
CR	172	PPM	XRF
V	244	PPM	XRF
SC	23	PPM	XRF
BA	655	PPM	XRF
LA	15.83	PPM	INAA
CE	35.9	PPM	INAA
ND	26	PPM	INAA
SM	5.7	PPM	INAA
EU	2	PPM	INAA
TB	0.828	PPM	INAA
YB	2.97	PPM	INAA
LU	0.429	PPM	INAA
HF	4.17	PPM	INAA
TA	1.55	PPM	INAA
U	0.22	PPM	INAA
TH	1.14	PPM	INAA