Sample 82-100

NavDat sample number 93529 · DACITE

Sample

Sample ID	82-100
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Grove and others

Location

Latitude	41.3992
Longitude	-122.199
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	63.95		WT%	XRF
TIO2	0.5		WT%	XRF
AL2O3	16.99		WT%	XRF
FE2O3	1.95		WT%	XRF
FEO	1.65		WT%	XRF
MNO	0.07		WT%	XRF
MGO	2.27		WT%	XRF
CAO	4.98		WT%	XRF
NA2O	4.55		WT%	XRF
K2O	1.22		WT%	XRF
P2O5	0.15		WT%	XRF
LOI	1.74		WT%	XRF
SR	709		PPM	XRF
BA	299		PPM	XRF
CE	19		PPM	XRF
LA	10		PPM	XRF
GA	21		PPM	XRF
NB	2		PPM	XRF
RB	29		PPM	XRF
Y	12		PPM	XRF
ZR	121		PPM	XRF
ZN	48		PPM	XRF
CU	53		PPM	XRF
CR	15		PPM	XRF
NI	9		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