Sample MK85623

NavDat sample number 16292 · DACITE

Sample

Sample ID	MK85623
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS
Comment	sill

Location

Latitude	46.332
Longitude	-121.73
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		18	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	69.34		WT%	XRF
TIO2	0.62		WT%	XRF
AL2O3	15.44		WT%	XRF
FEOT	4.72		WT%	XRF
MNO	0.14		WT%	XRF
MGO	0.72		WT%	XRF
CAO	3.01		WT%	XRF
NA2O	3.94		WT%	XRF
K2O	1.9		WT%	XRF
P2O5	0.17		WT%	XRF
TOTAL	100.01		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.