Sample 647 Tavw

NavDat sample number 88774 · ANDESITE

Sample

Sample ID	647 Tavw
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Alteration	plag 20-50% replaced by K-feldpsar
Comment	Altered

Location

Latitude	32.33
Longitude	-112.919
State / province	Arizona

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
23.8		23	24.6

Analyses

WHOLE ROCK

Item	Value	Std. dev.	Unit	Method
SIO2	60.9		WT%	XRF
AL2O3	15.9		WT%	XRF
FE2O3	4.26		WT%	XRF
MGO	1.1		WT%	XRF
CAO	2.87		WT%	XRF
NA2O	4.02		WT%	XRF
K2O	6.66		WT%	XRF
TIO2	0.577		WT%	XRF
P2O5	0.25		WT%	XRF
MNO	0.06		WT%	XRF
LOI	2.95		WT%	XRF
TOTAL	99.9		WT%	XRF
RB	332		PPM	XRF
ZR	204		PPM	ICP
NB	7		PPM	ICP
SC	3.2		PPM	ICP
V	68		PPM	ICP
CR	13		PPM	ICP
CO	7		PPM	ICP
NI	14		PPM	ICP
CU	9		PPM	ICP
ZN	36.7		PPM	ICP
ARSENIC	8		PPM	ICP
SR	656		PPM	ICP
Y	14		PPM	ICP
BA	1540		PPM	ICP
LA	32.4		PPM	ICP
PB	16		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