Sample 93-084

NavDat sample number 36912 · ANDESITE

Sample

Sample ID	93-084
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4848
Longitude	-121.506
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
28		24	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	62.46		WT%	XRF
TIO2	1		WT%	XRF
AL2O3	15.85		WT%	XRF
FEO	5.6		WT%	XRF
MNO	0.12		WT%	XRF
MGO	3.15		WT%	XRF
CAO	5.37		WT%	XRF
NA2O	3.32		WT%	XRF
K2O	2.88		WT%	XRF
P2O5	0.26		WT%	XRF

References

Swanson, Donald A (1996) Geologic map of the Hamilton Buttes Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1996.