Sample 83-56

NavDat sample number 93535 · DACITE

Sample

Sample ID	83-56
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.389
Longitude	-122.209
Location	Misery Hill cone
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.05		0.01	0.08

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	65.62		WT%	XRF
TIO2	0.44		WT%	XRF
AL2O3	16.64		WT%	XRF
FE2O3	1.76		WT%	XRF
FEO	1.36		WT%	XRF
MNO	0.05		WT%	XRF
MGO	2.16		WT%	XRF
CAO	4.86		WT%	XRF
NA2O	4.6		WT%	XRF
K2O	1.36		WT%	XRF
P2O5	0.12		WT%	XRF
LOI	1.17		WT%	XRF
SR	763		PPM	XRF
BA	309		PPM	XRF
CE	18		PPM	XRF
LA	14		PPM	XRF
GA	26		PPM	XRF
NB	2		PPM	XRF
RB	29		PPM	XRF
Y	7		PPM	XRF
ZR	103		PPM	XRF
ZN	64		PPM	XRF
CU	29		PPM	XRF
CR	13		PPM	XRF
NI	15		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