Laboratory accredited by GAZ, (Association for the Accreditation and Certification GmbH) Attestation no. 91021

CERTIFIED REFERENCE MATERIAL
SX18-06
Nb-ore concentrate

Version: 002      Date of certification: 06.06.08      Sample form: Powder < 0.125 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  CaO
  SiO2
  Fe
  MnO
  P2O5
 
  %
  %
  %
  %
  %
 
     27.77
      3.38
      5.44
      1.12
      1.75
 
      0.21
      0.03
      0.06
      0.01
      0.01
 
 3
 3
 3
 3
 3
 
1
1
1
1
1
 
  S
  Al2O3
  MgO
  TiO2
  Na2O
 
  %
  %
  %
  %
  %
 
      0.798
      0.945
     16.16
      0.078
      0.061
 
      0.022
      0.007
      0.11
      0.002
      0.002
 
 3
 3
 3
 9
 3
 
2
1
1
3,4,5
6
 
  K2O
  SrO
  BaO
  Y2O3
  La2O3
 
  %
  %
  %
  %
  %
 
      0.525
      0.274
      0.0445
      0.0090
      0.0420
 
      0.005
      0.002
      0.0006
      0.0006
      0.0013
 
 3
 3
 6
 9
 9
 
1
1
3,4
1,3,4
1,3,4
 
  ZrO2
  V2O5
  Nb2O5
  Ta2O5
  ZnO
 
  %
  %
  %
  %
  %
 
      0.0278
      0.0096
      0.098
    < 0.001
      0.0137
 
      0.0003
      0.0004
      0.001
      -.-
      0.0003
 
 6
 9
 3
 6
 9
 
1,4
1,4,5
4
3,4
1,3,4
 
  SnO2
  CeO2
  Nd2O3
  ThO2
  U3O8
 
  %
  %
  %
  %
  %
 
    < 0.0001
      0.083
      0.0387
      0.0089
      0.0017
 
      -.-
      0.002
      0.0005
      0.0002
    < 0.0001
 
 3
 6
 9
 3
 3
 
3
3,4
1,3,4
3
3
 
  CO2
  H2O 900°C
 
  %
  %
 
     36.82
      0.65
 
      0.06
      0.05
 
 3
 3
 
7
7
* Measuring method
1: X-ray fluorescence spectrometry
2: Combustion with IR-detection
3: ICP with quadrupol mass spectrometry
4: ICP with optical emission spectrometry
5: ICP with high resolution mass spectrometry
6: Atomic absorption spectrometry
7: detection with IR-/ UV-absorption after combustion
 

Comment
Thermal treatment of material before weighing: 105°C, 4 h