Sample SSP-43

NavDat sample number 29292 · BASALT

Sample

Sample ID	SSP-43
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	49.5	WT%	EPMA
TIO2	1.91	WT%	EPMA
AL2O3	17.3	WT%	EPMA
FEOT	10.3	WT%	EPMA
MNO	0.11	WT%	EPMA
MGO	6.58	WT%	EPMA
CAO	8.82	WT%	EPMA
NA2O	2.91	WT%	EPMA
K2O	1.78	WT%	EPMA
P2O5	0.48	WT%	EPMA
TOTAL	99.66	WT%	EPMA
NB	36	PPM	XRF
ZR	200	PPM	XRF
Y	24	PPM	XRF
SR	495	PPM	XRF
RB	40	PPM	XRF
NI	80	PPM	XRF
CR	146	PPM	XRF
V	192	PPM	XRF
SC	25	PPM	XRF
BA	672	PPM	XRF
D18O	6.3	PERMILL	MS