Sample B-166

NavDat sample number 58074 · ANDESITE

Sample

Sample ID	B-166
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	30.5333
Longitude	-110.083
Location	Cerro Cebadehuachi
State / province	Sonora
Country	Mexico
Location comment	Arizpe-Bacanuchi

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
26.97		26.91	27.03

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	68.14		WT%	XRF
AL2O3	15.76		WT%	XRF
FE2O3	2.2		WT%	XRF
FEO	0.45		WT%	XRF
MGO	0.7		WT%	XRF
CAO	1.72		WT%	XRF
NA2O	4.01		WT%	XRF
K2O	4.89		WT%	XRF
TIO2	0.35		WT%	XRF
P2O5	0.11		WT%	XRF
MNO	0.06		WT%	XRF
LOI	0.82		WT%	XRF
BA	768		PPM	ICPMS
CE	80.71		PPM	ICPMS
ND	25.27		PPM	ICPMS
SM	5.11		PPM	ICPMS
EU	1.37		PPM	ICPMS
YB	2.29		PPM	ICPMS
TH	17		PPM	ICPMS
RB	98		PPM	ICPMS
SR	551		PPM	ICPMS
Y	13		PPM	ICPMS
NB	10		PPM	ICPMS
ZR	826		PPM	ICPMS

References

Gonzalez Leon, Carlos M; McIntosh, William C; Lozano-Santa Cruz,Rufino; Valencia-Moreno, Martin; Amaya-Martinez, Ricardo; Rodriguez-Castaneda, Jose Luis (2000) Cretaceous and Tertiary sedimentary, magmatic, and tectonic evolutionof north-central Sonora (Arizpe and Bacanuchi quadrangles), NorthwestMexico. Geological Society of America Bulletin, vol.112, no.4, pp.600-610, Apr2000 doi:10.1130/0016-7606(2000)112<600:CATSMA>2.0.CO;2