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

CERTIFIED REFERENCE MATERIAL
SX18-03
Nb-ore concentrate

Version: 003      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
 
  %
  %
  %
  %
  %
 
     13.02
      1.91
      3.50
      0.325
      0.102
 
      0.03
      0.01
      0.01
      0.002
      0.006
 
 3
 3
 3
 3
 3
 
1
1
1
1
1
 
  S
  Al2O3
  MgO
  TiO2
  Na2O
 
  %
  %
  %
  %
  %
 
      0.051
      0.291
      0.136
      4.26
      5.28
 
      0.006
      0.002
      0.013
      0.01
      0.04
 
 3
 3
 3
 3
 4
 
1
1
1
1
2
 
  K2O
  SrO
  BaO
  Y2O3
  La2O3
 
  %
  %
  %
  %
  %
 
      0.233
      1.20
      0.201
      0.085
      0.153
 
      0.009
      0.04
      0.013
      0.013
      0.010
 
 3
 3
 3
 3
 3
 
1
1
1
1
1
 
  ZrO2
  V2O5
  Nb2O5
  Ta2O5
  ZnO
 
  %
  %
  %
  %
  %
 
      0.847
      0.073
     60.62
      0.273
    < 0.003
 
      0.007
      0.022
      0.05
      0.001
      -.-
 
 2
 3
 3
 3
 3
 
1
1
1
1
1
 
  CeO2
  Nd2O3
  ThO2
  U3O8
  F
 
  %
  %
  %
  %
  %
 
      0.556
      0.207
      0.770
      0.202
      3.65
 
      0.025
      0.006
      0.018
      0.006
      0.01
 
 2
 3
 3
 3
 3
 
1
1
1
1
1
 
  CO2
  H2O 900°C
 
  %
  %
 
      0.097
      0.664
 
      0.003
      0.008
 
 3
 3
 
3
3
* Measuring method
1: X-ray fluorescence spectrometry
2: Atomic absorption spectrometry
3: detection with IR-/ UV-absorption after combustion
 

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