Sample 85-014

NavDat sample number 55948 · DACITE

Sample

Sample ID	85-014
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.4207
Longitude	-121.924
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
16		14.4	17.6

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.44		WT%	XRF
TIO2	0.94		WT%	XRF
AL2O3	15.03		WT%	XRF
FEO	5.45		WT%	XRF
MNO	0.1		WT%	XRF
MGO	1.22		WT%	XRF
CAO	3.96		WT%	XRF
NA2O	4.15		WT%	XRF
K2O	2.45		WT%	XRF
P2O5	0.26		WT%	XRF

References

Swanson, Donald A (1989) Geologic maps of the French Butte and Greenhorn Buttes quadrangles, Washington. Open-File Report - U. S. Geological Survey. 1989.