Sample MK98413A

NavDat sample number 16290 · DACITE

Sample

Sample ID	MK98413A
Rock name	DACITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS
Comment	sill

Location

Latitude	46.455
Longitude	-121.615
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	65.96		WT%	XRF
TIO2	0.63		WT%	XRF
AL2O3	16.78		WT%	XRF
FEOT	4.69		WT%	XRF
MNO	0.09		WT%	XRF
MGO	2.37		WT%	XRF
CAO	4.23		WT%	XRF
NA2O	3.85		WT%	XRF
K2O	1.24		WT%	XRF
P2O5	0.16		WT%	XRF
TOTAL	99.99		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.