Sample 82-98

NavDat sample number 93527 · DACITE

Sample

Sample ID	82-98
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.406
Longitude	-122.193
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	63.25		WT%	XRF
TIO2	0.6		WT%	XRF
AL2O3	16.65		WT%	XRF
FE2O3	1.37		WT%	XRF
FEO	2.87		WT%	XRF
MNO	0.08		WT%	XRF
MGO	3.2		WT%	XRF
CAO	5.5		WT%	XRF
NA2O	4.05		WT%	XRF
K2O	1.56		WT%	XRF
P2O5	0.18		WT%	XRF
LOI	0.84		WT%	XRF
SR	589		PPM	XRF
BA	384		PPM	XRF
CE	19		PPM	XRF
LA	11		PPM	XRF
GA	22		PPM	XRF
NB	4		PPM	XRF
RB	35		PPM	XRF
Y	14		PPM	XRF
ZR	131		PPM	XRF
ZN	60		PPM	XRF
CU	29		PPM	XRF
CR	45		PPM	XRF
NI	16		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