Sample HSP-129

NavDat sample number 29323 · BASALT

Sample

Sample ID	HSP-129
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	49.9	WT%	EPMA
TIO2	2.05	WT%	EPMA
AL2O3	17.3	WT%	EPMA
FEOT	10.69	WT%	EPMA
MNO	0.13	WT%	EPMA
MGO	6.98	WT%	EPMA
CAO	9.21	WT%	EPMA
NA2O	2.22	WT%	EPMA
K2O	1.12	WT%	EPMA
P2O5	0.12	WT%	EPMA
TOTAL	99.72	WT%	EPMA
NB	33	PPM	XRF
ZR	202	PPM	XRF
Y	27	PPM	XRF
SR	511	PPM	XRF
RB	34	PPM	XRF
NI	78	PPM	XRF
CR	130	PPM	XRF
V	180	PPM	XRF
SC	24	PPM	XRF
BA	639	PPM	XRF