Sample 661 Taap

NavDat sample number 88777 · DACITE

Sample

Sample ID	661 Taap
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Alteration	plag 60-75% replaced by K-feldspar
Comment	Altered

Location

Latitude	32.309
Longitude	-112.891
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	58.8		WT%	XRF
AL2O3	15.9		WT%	XRF
FE2O3	5.5		WT%	XRF
MGO	3.66		WT%	XRF
CAO	6.21		WT%	XRF
NA2O	3.43		WT%	XRF
K2O	1.83		WT%	XRF
TIO2	0.694		WT%	XRF
P2O5	0.34		WT%	XRF
MNO	0.1		WT%	XRF
LOI	3		WT%	XRF
TOTAL	99.9		WT%	XRF
RB	50		PPM	XRF
ZR	250		PPM	ICP
NB	10		PPM	ICP
SC	4.6		PPM	ICP
V	43		PPM	ICP
CR	7		PPM	ICP
CO	3		PPM	ICP
NI	8		PPM	ICP
CU	15.6		PPM	ICP
ZN	17.3		PPM	ICP
SR	1320		PPM	ICP
Y	18		PPM	ICP
BA	1860		PPM	ICP
LA	24.6		PPM	ICP
PB	6		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