Sample BR-31

NavDat sample number 55409 · DACITE

Sample

Sample ID	BR-31
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	44.1897
Longitude	-122.233
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
10.82		10.66	10.98

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	69.62		WT%	XRF
TIO2	0.76		WT%	XRF
AL2O3	16.17		WT%	XRF
FEOT	3.7		WT%	XRF
MNO	0.07		WT%	XRF
MGO	0.59		WT%	XRF
CAO	2.45		WT%	XRF
NA2O	4.52		WT%	XRF
K2O	2		WT%	XRF
P2O5	0.12		WT%	XRF
TOTAL	100.27		WT%	XRF
LOI	2.77		WT%	XRF

References

Priest, George R; Black, Gerald L; Woller, Neil M; Taylor, Edward M (1988) Geologic map of the McKenzie Bridge Quadrangle, Lane County, Oregon. Geological Map Series (Portland). 48; 1988.