Sample DP78-3

NavDat sample number 21013 · RHYOLITE

Sample

Sample ID	DP78-3
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Obsidian

Location

Latitude	38
Longitude	-119
Location	Inyo Domes
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.0006		0.00054	0.00066

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	71.7		WT%	XRF
AL2O3	14.77		WT%	XRF
FE2O3	0.43		WT%	XRF
FEO	1.53		WT%	XRF
MGO	0.2		WT%	XRF
CAO	1.1		WT%	XRF
NA2O	4.69		WT%	XRF
K2O	5.11		WT%	XRF
TIO2	0.22		WT%	XRF
P2O5	0.05		WT%	XRF
MNO	0.07		WT%	XRF
H2O	0.22		WT%	XRF
TOTAL	100.09		WT%	XRF
BA	922		PPM	XRF
CR	0.4		PPM	XRF
CU	9		PPM	XRF
NB	22		PPM	XRF
RB	129		PPM	XRF
SR	111		PPM	XRF
Y	28		PPM	XRF
ZN	44		PPM	XRF
ZR	315		PPM	XRF

References

Varga, Robert J; Bailey, Roy A; Suemnicht, Gene A (1990) Evidence for 600 year-old basalt and magma mixing at Inyo Cratersvolcanic chain, Long Valley Caldera, California. Journal of Geophysical Research, vol.95, no.B13, pp.21,441-21,450, 10Dec 1990 doi:10.1029/JB095iB13p21441