Sample 710 Tasa

NavDat sample number 88779 · ANDESITE

Sample

Sample ID	710 Tasa
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Alteration	plage 0-50% replaced by K-feldspar
Comment	Altered

Location

Latitude	32.332
Longitude	-112.89
State / province	Arizona

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		22.3	27.7

Analyses

WHOLE ROCK

Item	Value	Std. dev.	Unit	Method
SIO2	59.2		WT%	XRF
AL2O3	16.1		WT%	XRF
FE2O3	5.65		WT%	XRF
MGO	2.64		WT%	XRF
CAO	5.01		WT%	XRF
NA2O	3.69		WT%	XRF
K2O	3.56		WT%	XRF
TIO2	0.714		WT%	XRF
P2O5	0.4		WT%	XRF
MNO	0.04		WT%	XRF
LOI	1.75		WT%	XRF
TOTAL	99.1		WT%	XRF
RB	100		PPM	XRF
ZR	354		PPM	ICP
NB	12		PPM	ICP
SC	2.9		PPM	ICP
V	42		PPM	ICP
CR	18		PPM	ICP
CO	8		PPM	ICP
NI	28		PPM	ICP
CU	14.9		PPM	ICP
ZN	47.1		PPM	ICP
SR	816		PPM	ICP
Y	22		PPM	ICP
BA	1540		PPM	ICP
LA	37.2		PPM	ICP
PB	7		PPM	ICP

References

Cox, Dennis P; Force, Eric R; Wilkinson, William H; More, Syver W; Rivera, John S; Wooden, Joseph L (2006) The Ajo mining district, Pima County, Arizona; evidence for middle Cenozoic detachment faulting, plutonism, volcanism, and hydrothermal alteration. U. S. Geological Survey Professional Paper, Report: P 1733, 46 pp., 1 Sheet, 2006