Sample Name: 15NJ11
IGSN: IE232000H
Laboratory: Grenoble Alpes
Analyst: Villamizar-Escalante Nicolas
Mineral: Zircon
Dosimeter Glass: IRMM 541
Dosimeter Glass U ppm: 50
Irradiation: 1-2016
Count Date:
Locality: Colombia
Rock Type: Igneous
Rock Age: 199
Acquisition system: Olympus BH-2 microscope
Magnification: 1250x
Radiation Facility: FRM II Munich
Total Thermal Neutron Fluence: 0.5 ×10^15 n/cm2
Position in Irradiation Canister (#): 23
Area of Graticule Square: 8,30E-07
No. of Crystals Counted: 7
Zeta Factor: 139,15
Zeta Factor Error (1s): 4.29
Rho d: 2,44E+05
Rho d (% Relative Error): 1.13
N d: 4049
Geometry factor (for EDM and Zeta ICPMS methods): 0.5
Etchant: NaOH-KOH
Etching Conditions: 228°C
Method - U:
ICPMS Model:
Laser Model and Type:
Instrumental Method References:
U Calibration Standard:
U ppm of Standard:
Specific Denisty of Dated Mineral:
Avagadro Constant:
Registration Factor (Rsp):
Etching Correction Factor (k):
ICPMS Zeta Standard:
Standard Age:
Standard Age Error:
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: 15NJ11
Sample Description: quartz feldspar granite
GeoObject Type: Individual Sample
Geoobject Classification: Felsic
Collection Method:
Material: Rock
Latitude: 6.9189827
Longitude: -73.0168615
Sample Comment:
Collector:
Material Classification: Felsic
Primary Location Name:
Primary Location Type:
Location Description:
Locality:
Locality Description:
Country: Colombia
Provice:
County:
City Or Township:
Platform:
Platform ID:
Original Archival Institution:
Original Archival Contact:
Most Recent Archival Institution:
Most Recent Archival Contact: