Sample 97-3

NavDat sample number 93517 · ANDESITE

Sample

Sample ID	97-3
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.4217
Longitude	-122.346
Location	Shastina cone
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.01		0.0094	0.01

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	59.27		WT%	XRF
TIO2	0.79		WT%	XRF
AL2O3	15.9		WT%	XRF
FE2O3	4.85		WT%	XRF
MNO	0.08		WT%	XRF
MGO	4.64		WT%	XRF
CAO	6.7		WT%	XRF
NA2O	3.69		WT%	XRF
K2O	1.79		WT%	XRF
P2O5	0.41		WT%	XRF
LOI	1.39		WT%	XRF
SR	1910		PPM	XRF
BA	1170		PPM	XRF
RB	56		PPM	XRF
Y	13		PPM	XRF
ZR	182		PPM	XRF
ZN	65		PPM	XRF
CU	55		PPM	XRF
NI	53		PPM	XRF

References

Grove, Timothy L; Baker, Michael B; Price, Richard C; Parman, StephenW; Elkins-Tanton, Linda T; Chatterjee, Nilanjan; Muentener, Othmar (2005) Magnesian andesite and dacite lavas from Mt. Shasta, NorthernCalifornia; products of fractional crystallization of H (sub 2) O-richmantle melts. Contributions to Mineralogy and Petrology, vol.148, no.5, pp.542-565,Jan 2005 doi:10.1007/s00410-004-0619-6