Sample 83-55

NavDat sample number 93487 · ANDESITE

Sample

Sample ID	83-55
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.411
Longitude	-122.193
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	62.44		WT%	XRF
TIO2	0.63		WT%	XRF
AL2O3	16.36		WT%	XRF
FE2O3	2.11		WT%	XRF
FEO	2.58		WT%	XRF
MNO	0.08		WT%	XRF
MGO	3.52		WT%	XRF
CAO	5.89		WT%	XRF
NA2O	4.32		WT%	XRF
K2O	1.41		WT%	XRF
P2O5	0.14		WT%	XRF
LOI	0.61		WT%	XRF
SR	668		PPM	XRF
BA	392		PPM	XRF
CE	18		PPM	XRF
LA	14		PPM	XRF
GA	23		PPM	XRF
NB	3		PPM	XRF
RB	36		PPM	XRF
Y	11		PPM	XRF
ZR	115		PPM	XRF
ZN	72		PPM	XRF
CU	33		PPM	XRF
CR	63		PPM	XRF
NI	18		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