Sample PZ-103

NavDat sample number 12244 · ANDESITE

Sample

Sample ID	PZ-103
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	andesite - devit

Location

Latitude	28.6668
Longitude	-104.167
Location	flank of Aguja 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	62.48		WT%	XRF
TIO2	1.47		WT%	XRF
AL2O3	15.93		WT%	XRF
FE2O3	1		WT%	XRF
FEO	4.99		WT%	XRF
MGO	1.34		WT%	XRF
CAO	3.78		WT%	XRF
NA2O	4.1		WT%	XRF
K2O	4.28		WT%	XRF
LOI	2.05		WT%	XRF
TOTAL	100.13		WT%	XRF
NI	7		PPM	MS-ID
RB	117		PPM	MS-ID
SR	349		PPM	MS-ID
Y	56		PPM	MS-ID
ZR	496		PPM	MS-ID
NB	36		PPM	MS-ID
PB	19		PPM	MS-ID
TH	12.4		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. .