Sample 82-86

NavDat sample number 93544 · ANDESITE

Sample

Sample ID	82-86
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.3643
Longitude	-122.186
Location	Sargents Ridge cone
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.19		0.13	0.25

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	61.96		WT%	XRF
TIO2	0.66		WT%	XRF
AL2O3	17.36		WT%	XRF
FE2O3	1.36		WT%	XRF
FEO	3.38		WT%	XRF
MNO	0.09		WT%	XRF
MGO	3.52		WT%	XRF
CAO	6		WT%	XRF
NA2O	4.03		WT%	XRF
K2O	1.33		WT%	XRF
P2O5	0.17		WT%	XRF
LOI	0.33		WT%	XRF
SR	781		PPM	XRF
BA	365		PPM	XRF
CE	19		PPM	XRF
LA	12		PPM	XRF
GA	21		PPM	XRF
NB	4		PPM	XRF
RB	29		PPM	XRF
Y	14		PPM	XRF
ZR	130		PPM	XRF
ZN	58		PPM	XRF
CU	20		PPM	XRF
CR	53		PPM	XRF
NI	24		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