Sample HSP-11

NavDat sample number 29327 · BASALT

Sample

Sample ID	HSP-11
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	alkali olivine basalt; microporphyritic with microphenos of olivine and plag in fine-grained, subophitic to intersertal matrix of plag, pyroxene, glass, and opaques; erupted from same cinder cone as unit 1; location given is for 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 2

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

Item	Value	Unit	Method
SIO2	46.2	WT%	EPMA
TIO2	2.2	WT%	EPMA
AL2O3	15.8	WT%	EPMA
FEOT	13.34	WT%	EPMA
MNO	0.19	WT%	EPMA
MGO	7.18	WT%	EPMA
CAO	9.14	WT%	EPMA
NA2O	3	WT%	EPMA
K2O	1.09	WT%	EPMA
P2O5	0.41	WT%	EPMA
TOTAL	98.52	WT%	EPMA
NB	23	PPM	XRF
ZR	143	PPM	XRF
Y	29	PPM	XRF
SR	358	PPM	XRF
RB	18	PPM	XRF
NI	79	PPM	XRF
CR	147	PPM	XRF
V	226	PPM	XRF
SC	30	PPM	XRF
BA	428	PPM	XRF