Sample 89-096

NavDat sample number 22298 · ANDESITE

Sample

Sample ID	89-096
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.474
Longitude	-121.85
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	59.19		WT%	XRF
TIO2	1.56		WT%	XRF
AL2O3	15.89		WT%	XRF
FEO	8.56		WT%	XRF
MNO	0.17		WT%	XRF
MGO	2.5		WT%	XRF
CAO	6.34		WT%	XRF
NA2O	4.49		WT%	XRF
K2O	1		WT%	XRF
P2O5	0.31		WT%	XRF

References

Swanson, Donald A (1991) Geologic map of the Tower Rock Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1991.