Sample Name: TF_12 (AFT)
IGSN: IEATG1612
Laboratory: LA TE ANDES S.A - Argentina
Analyst: Antonella Galetto
Mineral: APATITE
Dosimeter Glass: IRMM540
Dosimeter Glass U ppm: 15 mg/Kg of U
Irradiation: Atomic Center of Ezeiza (CNEA), Buenos Aires, Argentina
Count Date: 2018
Locality: Northern Neuquén province, Argentina
Rock Type: Granodiorite
Rock Age: Permian
Acquisition system:
Magnification:
Radiation Facility:
Total Thermal Neutron Fluence: 6.65E+15
Position in Irradiation Canister (#):
Area of Graticule Square:
No. of Crystals Counted: 33
Zeta Factor: 344.1
Zeta Factor Error (1s): ± 22.1
Rho d:
Rho d (% Relative Error): 9,73E+03
N d: 5379
Geometry factor (for EDM and Zeta ICPMS methods):
Etchant:
Etching Conditions: 5.5 N (HNO3) for 20 seconds at 20°C
Method - U:
ICPMS Model:
Laser Model and Type:
Instrumental Method References:
U Calibration Standard: Durango
U ppm of Standard:
Specific Denisty of Dated Mineral:
Avagadro Constant:
Registration Factor (Rsp):
Etching Correction Factor (k):
ICPMS Zeta Standard:
Standard Age:
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Primary Zeta:
1 sigma Uncertainty:
Session (Modified) Zeta:
1 sigma (Modified) Uncertainty:
Comment:
Chemistry Method:
Chemistry Laboratory:
Chemistry Comment:
238U Decay Constant: 1.55125E-10
238U Decay Constant Error:
235U Decay Constant: 9.84850E-10
235U Decay Constant Error:
232Th Decay Constant : 4.94750E-11
232Th Decay Constant Error:
Spontaneous Fission Decay Constant: 8.46E-17
Spontaneous Fission Decay Constant Error:
238U/235U: 137.88
Fission Decay Constant Reference: Spadavecchia , A. & Hahn, B. (1967). Die Rotationskammer und einige Anwendungen. Helvetica Physica Acta, 40, p. 1063-1079
Decay Constant References: Steiger, R.H. and Jager, E., 1977, Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters, v. 36, no. 3, p. 359-362
Decay Constant Comment:

Sample ID: TF_12
Sample Description: Igneous
GeoObject Type: Individual Sample
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Material: Rock
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Country: Argentina
Provice: Neuquén
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