Sample PZ?56

NavDat sample number 12287 · DACITE

Sample

Sample ID	PZ?56
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	San Antonio dacite - vit

Location

Latitude	29
Longitude	-104.667
Location	0.5km N of C. La Centana
State / province	Chihuahua

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
32		26	38

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.12		WT%	XRF
TIO2	0.91		WT%	XRF
AL2O3	14.92		WT%	XRF
FE2O3	0.86		WT%	XRF
FEO	4.29		WT%	XRF
MNO	0.14		WT%	XRF
MGO	1.07		WT%	XRF
CAO	2.62		WT%	XRF
NA2O	3.72		WT%	XRF
K2O	5.01		WT%	XRF
P2O5	0.35		WT%	XRF
LOI	1.85		WT%	XRF
TOTAL	100.55		WT%	XRF
RB	178		PPM	MS-ID
SR	264		PPM	MS-ID
Y	64		PPM	MS-ID
ZR	570		PPM	MS-ID
NB	41		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. .