Sample HSP-104

NavDat sample number 29315 · BASALT

Sample

Sample ID	HSP-104
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	47.9	WT%	EPMA
TIO2	1.69	WT%	EPMA
AL2O3	16.4	WT%	EPMA
FEOT	10.73	WT%	EPMA
MNO	0.13	WT%	EPMA
MGO	8.86	WT%	EPMA
CAO	10.1	WT%	EPMA
NA2O	2.38	WT%	EPMA
K2O	1.1	WT%	EPMA
P2O5	0.23	WT%	EPMA
TOTAL	99.58	WT%	EPMA
NB	20	PPM	XRF
ZR	143	PPM	XRF
Y	22	PPM	XRF
SR	432	PPM	XRF
RB	25	PPM	XRF
NI	119	PPM	XRF
CR	210	PPM	XRF
V	198	PPM	XRF
SC	26	PPM	XRF
BA	496	PPM	XRF
D18O	5.82	PERMILL	MS