Sample FH86-2685B

NavDat sample number 33878 · RHYOLITE

Sample

Sample ID	FH86-2685B
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	42.9056
Longitude	-112.511
Location	Eastern Snake River Plain
State / province	Idaho
Volcanic field	rhyolite of west Pocatello

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
7.9		7.5	8.3

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	73.3		WT%	UNKNOWN
AL2O3	12.4		WT%	UNKNOWN
FEOT	2.91		WT%	UNKNOWN
MGO	0.2		WT%	UNKNOWN
CAO	0.96		WT%	UNKNOWN
NA2O	3.19		WT%	UNKNOWN
K2O	4.8		WT%	UNKNOWN
TIO2	0.39		WT%	UNKNOWN
P2O5	0.08		WT%	UNKNOWN
MNO	0.02		WT%	UNKNOWN
LOI	0.83		WT%	UNKNOWN
TOTAL	99.08		WT%	UNKNOWN

References

Kellogg, K S; Harlan, S S; Mehnert, H H; Snee, L W; Pierce, K L; Hackett, W R; Rodgers, D W (1994) U. S. Geological Survey Bulletin, Report: B 2091, 18 pp., 1994