Sample 26

NavDat sample number 5599 · RHYOLITE

Sample

Sample ID	26
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.709
Longitude	-121.144
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		23	27

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	73.22		WT%	XRF
TIO2	0.38		WT%	XRF
AL2O3	14.77		WT%	XRF
FEOT	2.41		WT%	XRF
MNO	0.04		WT%	XRF
MGO	0.38		WT%	XRF
CAO	1.95		WT%	XRF
NA2O	2.98		WT%	XRF
K2O	3.76		WT%	XRF
P2O5	0.12		WT%	XRF
TOTAL	99.97		WT%	XRF
LOI	5.35		WT%	XRF

References

Swanson, D A (1978) Geologic map of the Tieton River area, Yakima County, South-central Washington. Miscellaneous Field Studies Map - U. S. Geological Survey. 1978.