Sample BP0815851

NavDat sample number 16239 · ANDESITE

Sample

Sample ID	BP0815851
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.172
Longitude	-122.414
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		35	37

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	59.61		WT%	XRF
TIO2	1.08		WT%	XRF
AL2O3	16.82		WT%	XRF
FEOT	7.31		WT%	XRF
MNO	0.14		WT%	XRF
MGO	3.81		WT%	XRF
CAO	7.08		WT%	XRF
NA2O	2.84		WT%	XRF
K2O	1.06		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	99.99		WT%	XRF

References

Phillips-William-M (compiler) (1987) Geologic map of the Mount St. Helens Quadrangle, Washington and Oregon. Open-File Report - Washington (State). Division of Geology and Earth Resources. 1987.