Sample XAL-33

NavDat sample number 51551 · ANDESITE

Sample

Sample ID	XAL-33
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	21.3423
Longitude	-104.817
Location	Mexico
State / province	Nayarit

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2.25		2.23	2.27

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	63.4		WT%	ICPMS
TIO2	0.88		WT%	ICPMS
AL2O3	16.6		WT%	ICPMS
FE2O3T	5.46		WT%	ICPMS
MNO	0.1		WT%	ICPMS
MGO	1.87		WT%	ICPMS
CAO	4.61		WT%	ICPMS
NA2O	4.54		WT%	ICPMS
K2O	2.3		WT%	ICPMS
P2O5	0.24		WT%	ICPMS
TOTAL	100		WT%	ICPMS
LOI	0.45		WT%	ICPMS
BA	1156		PPM	ICPMS
SR	526		PPM	ICPMS
Y	50		PPM	ICPMS
ZR	167		PPM	ICPMS

References

Frey, Holli M; Lange, Rebecca A; Hall, Chris M; Delgado-Granados,Hugo; Carmichael, Ian S E (2007) A Pliocene ignimbrite flare-up along the Tepic-Zacoalco Rift; evidencefor the initial stages of rifting between the Jalisco Block (Mexico)and North America. Geological Society of America Bulletin, vol.119, no.1-2, pp.49-64, Jan2007 doi:10.1130/B25950.1