Sample 90-102

NavDat sample number 57141 · BASALTIC-ANDESITE

Sample

Sample ID	90-102
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.32
Longitude	-121.79
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	54.19		WT%	XRF
TIO2	1.85		WT%	XRF
AL2O3	16.74		WT%	XRF
FEO	10.27		WT%	XRF
MNO	0.22		WT%	XRF
MGO	3.85		WT%	XRF
CAO	8.79		WT%	XRF
NA2O	3.52		WT%	XRF
K2O	0.33		WT%	XRF
P2O5	0.24		WT%	XRF

References

Swanson, Donald A (1992) Geologic map of the McCoy Peak Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1992.