Sample PZ?214

NavDat sample number 12284 · RHYOLITE

Sample

Sample ID	PZ?214
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Cerro rhyolite- vit

Location

Latitude	28.4166
Longitude	-104.667
Location	SE flank of Cerro Escobillas
State / province	Chihuahua

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
29.5		26	38

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	72.81		WT%	XRF
TIO2	0.44		WT%	XRF
AL2O3	14.12		WT%	XRF
FE2O3	0.4		WT%	XRF
FEO	2		WT%	XRF
MNO	0.05		WT%	XRF
MGO	0.83		WT%	XRF
CAO	2.16		WT%	XRF
NA2O	3.84		WT%	XRF
K2O	3.26		WT%	XRF
P2O5	0.1		WT%	XRF
LOI	5.74		WT%	XRF
TOTAL	100.49		WT%	XRF
RB	183		PPM	MS-ID
SR	328		PPM	MS-ID
Y	51		PPM	MS-ID
ZR	287		PPM	MS-ID
NB	32		PPM	MS-ID

References

Cameron, Kenneth L; Cameron, Maryellen (1986) Geochemistry of quartz-normative igneous rocks from the Chinati Mountains and Terlingua areas, West Texas; a comparison with Cenozoic volcanic rocks from Chihuahua and Baja California Sur, Mexico. Guidebook - Bureau of Economic Geology, University of Texas at Austin. 23; Pages 143-163. 1986. .