Sample 82-97

NavDat sample number 93482 · DACITE

Sample

Sample ID	82-97
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.409
Longitude	-122.195
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	63.38		WT%	XRF
TIO2	0.59		WT%	XRF
AL2O3	16.62		WT%	XRF
FE2O3	3.82		WT%	XRF
FEO	0.83		WT%	XRF
MNO	0.07		WT%	XRF
MGO	3.03		WT%	XRF
CAO	5.19		WT%	XRF
NA2O	4		WT%	XRF
K2O	1.56		WT%	XRF
P2O5	0.14		WT%	XRF
LOI	0.47		WT%	XRF
SR	611		PPM	XRF
BA	409		PPM	XRF
CE	22		PPM	XRF
LA	13		PPM	XRF
GA	26		PPM	XRF
NB	3		PPM	XRF
RB	40		PPM	XRF
Y	10		PPM	XRF
ZR	136		PPM	XRF
ZN	49		PPM	XRF
CU	16		PPM	XRF
CR	58		PPM	XRF
NI	13		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