Sample HSP-19

NavDat sample number 29281 · BASALT

Sample

Sample ID	HSP-19
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	silica-saturated olivine tholeiite; pahoehoe flows; large plag phenos and smaller olivine microphenos in medium to coarse grained, ophitic, diktytaxitic groundmass; location given is for the vent

Latitude	43.4795
Longitude	-115.564
Location	Western Snake River Plain
State / province	Idaho
Volcanic field	Boise River Group 1, Steamboat Rock basalt

Age (Ma)	Error	Min	Max	Geologic age	Dated by
1.8		1.5	2.1

Item	Value	Unit	Method
SIO2	46.3	WT%	EPMA
TIO2	3.23	WT%	EPMA
AL2O3	14.9	WT%	EPMA
FEOT	14.38	WT%	EPMA
MNO	0.15	WT%	EPMA
MGO	6.86	WT%	EPMA
CAO	10.3	WT%	EPMA
NA2O	2.36	WT%	EPMA
K2O	0.41	WT%	EPMA
P2O5	0.44	WT%	EPMA
TOTAL	99.31	WT%	EPMA
NB	37	PPM	XRF
ZR	286	PPM	XRF
Y	33	PPM	XRF
SR	353	PPM	XRF
RB	20	PPM	XRF
NI	65	PPM	XRF
CR	130	PPM	XRF
V	299	PPM	XRF
SC	24	PPM	XRF
BA	557	PPM	XRF