Sample Name: 4GAL18
IGSN: IEMIL000L
Laboratory: GET
Analyst: S. Brichau
Mineral: Apatite
Dosimeter Glass: CN5
Dosimeter Glass U ppm: 12.5
Irradiation: 19IR1-C3
Count Date: 27/02/2020
Locality: GET, Toulouse, France
Rock Type:
Rock Age:
Acquisition system: Olympus BX61
Magnification: 1250
Radiation Facility: Chilean CCHEN reactor
Total Thermal Neutron Fluence: 1.1E16 n/cm²
Position in Irradiation Canister (#): 18
Area of Graticule Square: 0.000000884
No. of Crystals Counted: 16
Zeta Factor: 341.8
Zeta Factor Error (1s): 7.97
Rho d: 1189107.95
Rho d (% Relative Error): 1.4
N d: 10391
Geometry factor (for EDM and Zeta ICPMS methods):
Etchant: 40% HF
Etching Conditions: 20°C for 40 min
Method - U: External detector
ICPMS Model:
Laser Model and Type:
Instrumental Method References:
U Calibration Standard:
U ppm of Standard:
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1 sigma (Modified) Uncertainty:
Comment:
Chemistry Method: 5.5N HNO3 at 20°C for 20s
Chemistry Laboratory: GET
Chemistry Comment: No
238U Decay Constant: 1.55125E-10
238U Decay Constant Error: 8.3E-8
235U Decay Constant: 9.84850E-10
235U Decay Constant Error: 6.7E-7
232Th Decay Constant : 4.94750E-11
232Th Decay Constant Error: 0.0000025
Spontaneous Fission Decay Constant: 8.46E-17
Spontaneous Fission Decay Constant Error: 0.14E-17
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: GAL4
Sample Description:
GeoObject Type: Individual Sample
Geoobject Classification:
Collection Method:
Material: Rock
Latitude: 42.512123
Longitude: 2.201908
Sample Comment:
Collector: Gaétan Milesi
Material Classification:
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Most Recent Archival Institution: University of Montpellier
Most Recent Archival Contact: