Sample 83-44

NavDat sample number 93483 · ANDESITE

Sample

Sample ID	83-44
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.4088
Longitude	-122.139
Location	Hotlum cone
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0		0.002	0.006

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	62.26		WT%	XRF
TIO2	0.61		WT%	XRF
AL2O3	16.93		WT%	XRF
FE2O3	1.92		WT%	XRF
FEO	2.64		WT%	XRF
MNO	0.08		WT%	XRF
MGO	3.49		WT%	XRF
CAO	5.99		WT%	XRF
NA2O	4.6		WT%	XRF
K2O	1.23		WT%	XRF
P2O5	0.16		WT%	XRF
LOI	0.55		WT%	XRF
SR	714		PPM	XRF
BA	354		PPM	XRF
CE	23		PPM	XRF
LA	15		PPM	XRF
GA	24		PPM	XRF
NB	3		PPM	XRF
RB	26		PPM	XRF
Y	11		PPM	XRF
ZR	110		PPM	XRF
ZN	73		PPM	XRF
CU	26		PPM	XRF
CR	68		PPM	XRF
NI	40		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