Sample HSP-82

NavDat sample number 29310 · BASALT

Sample

Sample ID	HSP-82
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	49.2	WT%	EPMA
TIO2	1.96	WT%	EPMA
AL2O3	17	WT%	EPMA
FEOT	10.56	WT%	EPMA
MNO	0.17	WT%	EPMA
MGO	6.61	WT%	EPMA
CAO	9.24	WT%	EPMA
NA2O	3.02	WT%	EPMA
K2O	1.89	WT%	EPMA
P2O5	0.47	WT%	EPMA
TOTAL	100.07	WT%	EPMA
NB	37	PPM	XRF
ZR	193	PPM	XRF
Y	27	PPM	XRF
SR	490	PPM	XRF
RB	45	PPM	XRF
NI	68	PPM	XRF
CR	134	PPM	XRF
V	191	PPM	XRF
SC	22	PPM	XRF
BA	635	PPM	XRF