Sample MK85622

NavDat sample number 16293 · RHYOLITE

Sample

Sample ID	MK85622
Rock name	RHYOLITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS
Comment	intrusion

Location

Latitude	46.34
Longitude	-121.73
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
18		12	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	77.11		WT%	XRF
TIO2	0.11		WT%	XRF
AL2O3	14.55		WT%	XRF
FEOT	0.88		WT%	XRF
MNO	0.08		WT%	XRF
MGO	0.02		WT%	XRF
CAO	1.3		WT%	XRF
NA2O	3.03		WT%	XRF
K2O	2.84		WT%	XRF
P2O5	0.08		WT%	XRF
TOTAL	100.02		WT%	XRF

References

Korosec-Michael-A (compiler) (1987) Geologic map of the Mount Adams Quadrangle, Washington. Open-File Report - Washington (State). Division of Geology and Earth Resources. 1987.