Sample 656 Taap

NavDat sample number 88776 · DACITE

Sample

Sample ID	656 Taap
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Alteration	plag 10-25% replaced by K-feldspar
Comment	Altered

Location

Latitude	32.342
Longitude	-112.916
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	59.7		WT%	XRF
AL2O3	16.9		WT%	XRF
FE2O3	4.96		WT%	XRF
MGO	2.15		WT%	XRF
CAO	3.53		WT%	XRF
NA2O	3.65		WT%	XRF
K2O	5.35		WT%	XRF
TIO2	0.697		WT%	XRF
P2O5	0.24		WT%	XRF
MNO	0.06		WT%	XRF
LOI	2.15		WT%	XRF
TOTAL	99.7		WT%	XRF
RB	214		PPM	XRF
ZR	226		PPM	ICP
NB	9		PPM	ICP
BE	0.6		PPM	ICP
SC	1		PPM	ICP
V	77		PPM	ICP
CR	15		PPM	ICP
CO	12		PPM	ICP
NI	22		PPM	ICP
CU	5.7		PPM	ICP
ZN	56.9		PPM	ICP
SR	724		PPM	ICP
Y	14		PPM	ICP
BA	1380		PPM	ICP
LA	24.1		PPM	ICP
PB	13		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