Sample HSP-26

NavDat sample number 29318 · BASALT

Sample

Sample ID	HSP-26
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
0.26		0.1	0.42

Item	Value	Unit	Method
SIO2	48.5	WT%	EPMA
TIO2	1.96	WT%	EPMA
AL2O3	16.5	WT%	EPMA
FEOT	10.53	WT%	EPMA
MNO	0.11	WT%	EPMA
MGO	7.83	WT%	EPMA
CAO	9.13	WT%	EPMA
NA2O	2.85	WT%	EPMA
K2O	1.6	WT%	EPMA
P2O5	0.39	WT%	EPMA
TOTAL	99.52	WT%	EPMA
NB	37	PPM	XRF
ZR	177	PPM	XRF
Y	30	PPM	XRF
SR	507	PPM	XRF
RB	34	PPM	XRF
NI	100	PPM	XRF
CR	223	PPM	XRF
V	192	PPM	XRF
SC	27	PPM	XRF
BA	591	PPM	XRF