Sample HSP-112

NavDat sample number 29344 · BASALT

Sample

Sample ID	HSP-112
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	alkali olivine basalt; unit comprises aa flows near the source cinder cone and pahoehoe flows farther away; contains microphenos of plag and olivine in glassy to aphanitic groundmass of plag, olivine, pyroxene, alkali feldspar, glass, and opaques; given location is for the vent

Latitude	43.521
Longitude	-115.416
Location	Western Snake River Plain
State / province	Idaho
Volcanic field	Boise River Group 2, Fall Creek basalt

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.35		0.2	0.5

Item	Value	Unit	Method
SIO2	46.6	WT%	EPMA
TIO2	2.44	WT%	EPMA
AL2O3	15.6	WT%	EPMA
FEOT	13.55	WT%	EPMA
MNO	0.2	WT%	EPMA
MGO	6.9	WT%	EPMA
CAO	9.29	WT%	EPMA
NA2O	2.83	WT%	EPMA
K2O	1.12	WT%	EPMA
P2O5	0.2	WT%	EPMA
TOTAL	98.79	WT%	EPMA
NB	23	PPM	XRF
ZR	167	PPM	XRF
Y	33	PPM	XRF
SR	343	PPM	XRF
RB	23	PPM	XRF
NI	73	PPM	XRF
CR	134	PPM	XRF
V	251	PPM	XRF
SC	20	PPM	XRF
BA	480	PPM	XRF