Sample MH-25

NavDat sample number 54806 · ANDESITE

Sample

Sample ID	MH-25
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	45.3925
Longitude	-121.824
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
14		12	16

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	59.38		WT%	XRF
TIO2	0.85		WT%	XRF
AL2O3	19.71		WT%	XRF
FEOT	6.44		WT%	XRF
MNO	0.13		WT%	XRF
MGO	3.61		WT%	XRF
CAO	6.23		WT%	XRF
NA2O	3.34		WT%	XRF
K2O	0.18		WT%	XRF
P2O5	0.13		WT%	XRF
TOTAL	100		WT%	XRF

References

Priest, George R (1982) Geology and geothermal resources of the Mount Hood area, Oregon; introduction. Special Paper - Oregon, Department of Geology and Mineral Industries. 14; Pages 1-2. 1982.