Sample CRS-412

NavDat sample number 7368 · RHYOLITE

Sample

Sample ID	CRS-412
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	47.148
Longitude	-121.711
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	72.59		WT%	XRF
TIO2	0.37		WT%	XRF
AL2O3	14.34		WT%	XRF
FEOT	2.86		WT%	XRF
MNO	0.04		WT%	XRF
MGO	0.47		WT%	XRF
CAO	1.35		WT%	XRF
NA2O	2.84		WT%	XRF
K2O	5.1		WT%	XRF
P2O5	0.03		WT%	XRF
TOTAL	100.89		WT%	XRF
LOI	1.6		WT%	XRF

References

Fischer, Joseph Fred (1970) The geology of the White River-Carbon Ridge area, Cedar Lake Quadrangle, Cascade Mountains, Washington.