Sample 83-51

NavDat sample number 93502 · ANDESITE

Sample

Sample ID	83-51
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.4297
Longitude	-122.227
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	62.43		WT%	XRF
TIO2	0.61		WT%	XRF
AL2O3	16.29		WT%	XRF
FE2O3	1.58		WT%	XRF
FEO	2.78		WT%	XRF
MNO	0.08		WT%	XRF
MGO	3.82		WT%	XRF
CAO	6.11		WT%	XRF
NA2O	4.59		WT%	XRF
K2O	1.12		WT%	XRF
P2O5	0.19		WT%	XRF
LOI	0.87		WT%	XRF
SR	987		PPM	XRF
BA	328		PPM	XRF
CE	27		PPM	XRF
LA	15		PPM	XRF
GA	26		PPM	XRF
NB	3		PPM	XRF
RB	23		PPM	XRF
Y	11		PPM	XRF
ZR	128		PPM	XRF
ZN	71		PPM	XRF
CU	46		PPM	XRF
CR	76		PPM	XRF
NI	65		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