Sample 126

NavDat sample number 30792 · RHYOLITE

Sample

Sample ID	126
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	37.775
Longitude	-118.708
Location	Glass Mountain
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.81		0.729	0.891

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	77.2		WT%	EDXRF
TIO2	0.07		WT%	EDXRF
AL2O3	12.5		WT%	EDXRF
FE2O3	0.79		WT%	EDXRF
MNO	0.03		WT%	EDXRF
CAO	0.46		WT%	EDXRF
NA2O	3.88		WT%	EDXRF
K2O	4.89		WT%	EDXRF
LOI	0.44		WT%	EDXRF
RB	165		PPM	EDXRF
Y	19		PPM	EDXRF
ZR	100		PPM	EDXRF
NB	22		PPM	EDXRF

References

Metz, J M; Mahood, G A (1991) Development of the Long Valley, California, magma chamber recorded inprecaldera rhyolite lavas of Glass Mountain. Contributions to Mineralogy and Petrology, vol.106, no.3, pp.379-397,1991 doi:10.1007/BF00324565