Sample SSP-81

NavDat sample number 29283 · BASALT

Sample

Sample ID	SSP-81
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	45.7	WT%	EPMA
TIO2	2.79	WT%	EPMA
AL2O3	15.4	WT%	EPMA
FEOT	13.94	WT%	EPMA
MNO	0.21	WT%	EPMA
MGO	7.34	WT%	EPMA
CAO	10.26	WT%	EPMA
NA2O	2.63	WT%	EPMA
K2O	0.5	WT%	EPMA
P2O5	0.71	WT%	EPMA
TOTAL	99.48	WT%	EPMA
NB	25	PPM	XRF
ZR	260	PPM	XRF
Y	38	PPM	XRF
SR	356	PPM	XRF
RB	6	PPM	XRF
NI	68	PPM	XRF
CR	211	PPM	XRF
V	293	PPM	XRF
SC	28	PPM	XRF
BA	443	PPM	XRF