Sample TC-4

NavDat sample number 57356 · ANDESITE

Sample

Sample ID	TC-4
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.479
Longitude	-121.649
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	58.29		WT%	XRF
TIO2	1.59		WT%	XRF
AL2O3	15.99		WT%	XRF
FEO	9.39		WT%	XRF
MNO	0.16		WT%	XRF
MGO	2.8		WT%	XRF
CAO	7.5		WT%	XRF
NA2O	2.89		WT%	XRF
K2O	1.12		WT%	XRF
P2O5	0.26		WT%	XRF

References

Swanson, Donald A (1993) Geologic map of the Blue Lake Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1993.