Tel: +27 (0) 11 923 0800 Fax: +27 (0) 11 392 4715 web: www.amis.co.za
11 Gewel Street (off Hulley Road), D1 Isando Business Park, Kempton Park, 1609
P.O. Box 856, Isando, 1600, Gauteng, South Africa, a division of the Set Point Group
AMIS0248
Certified Reference Material
Copper cobalt oxide ore
Kinsevere, DRC
Certificate of Analysis
Recommended Concentrations and Limits1.
(at two Standard Deviations)
Certified Concentrations2.
Co F
Co M/ICP
Co P
Cu F
Cu M/ICP
Cu P
Specific Gravity
4807
4653
4673
18.599
18.567
18.571
3.21
± ± ± ± ± ± ± 348
471
283
0.965
0.622
0.892
0.12
ppm
ppm
ppm
%
%
%
1. Manufacturers recommended limits for use of the material as control samples, based on two
standard deviations, calculated using “Between Laboratory” statistics for treatment of the data
for trivial, non-trivial and technically invalid results. See sections 1, 9 and 12.
2. There is additional certified major element data presented on p2 and uncertified trace element
data presented as an appendix.
Directors: GJ Horsfield (CEO), MD Evers (CFO)(British), A Buddingh, W Erasmus, Gerber, SJ Ingram
M McWha, N Robinson, V Singh (Alt), MH Snelling, D Steenkamp (Alt), J Vassiloudis
Major Element
Recommended Concentrations and Limits
(at two Standard Deviations)
Certified Concentrations
Al2O3
Fe2O3
K2 O
MgO
MnO
SiO2
TiO2
LOI
5.96
9.26
0.88
2.92
0.10
42.98
0.45
12.22
± ± ± ± ± ± ± ± 0.30
0.60
0.08
0.12
0.01
0.78
0.04
0.34
%
%
%
%
%
%
%
%
Provisional Concentrations
CaO
Cr2O3
0.11
0.04
± 0.04
± 0.01
%
%
Indicated Means
Na2O
0.07
%
1.
Intended Use: AMIS0248 can be used to check analysis of samples of copper cobalt ores
with a similar grade and matrix.
It is a matrix matched Certified Reference Material (CRM) fit for use as control samples in routine
assay laboratory quality control when inserted within runs of samples and measured in parallel to
the unknown. Its purpose is to monitor inter-laboratory or instrument bias and within lab precision.
It can be used, indirectly, to establish the traceability of results to an SI system of units.
The recommended concentrations and limits for this material are property values based on a
measurement campaign (round robin) and reflect consensus results from the laboratories that
participated in the round robin.
Slight variations in analytical procedures between laboratories will reflect as slight biases to the
recommended concentrations (see 19). Good laboratories will report results within the two standard
deviation levels with a failure rate of <10 %.
The material can also be used for method development and for the calibration of equipment.
2.
Origin of Material: AMIS0248 is a commissioned CRM made from “FM” material supplied
by SGS Minerals Services from the Kinsevere Copper Mine, 27 km north on Lubumbashi, in the
Katanga Province of the Democratic Republic of Congo (DRC). Kinsevere, formerly owned by Anvil
Mining Limited, is now 95% owned by Minmetals Resources.
The Kinsevere Project comprises three known structurally modified stratiform copper deposits;
Tshifufia, Tshifufiamashi and Kinsevere Hill. These are hosted within interbedded calcareous
siltstones and silty dolomites of the Mines Group, overturned to a steep eastward dip during the
Lufilian Orogeny (approximately 550 Ma). Deep weathering, extending to approximately 100 m
below surface, has led to the development of a large oxide resource hosted by highly altered
dolomitic and argillaceous sediments. Underlying sulphide mineralisation comprises chalcopyrite in
crosscutting veins and stringers.
2
3.
Mineral and Chemical Composition: Oxide ore mineralogy at Tshifufia, Tshifufiamashi
and Kinsevere Hill is composed predominantly of malachite and pseudomalachite, with minor
chrysocolla and rare intergrown heterogenite. These occur as disseminations and/or in veins and
veinlets, which sometimes coalesce into prominent “clots”. Underlying sulphide mineralisation
comprises chalcopyrite, chalcocite, and bornite; typically occuring as finely disseminated, bedding
parallel layers, stratiform veins or as replacement of pyrite nodules. Lesser cross cutting quartzcarbonate- sulphide veins are also observed. Sulphide remobilisation during faulting has also led to
the development of variably mineralised breccias.
4.
6/4).
Appearance: The material is a very fine powder. It is colored a Pale Olive (Corstor 5Y
5.
Handling instructions: The material is packaged in Laboratory Packs and Explorer
Packs that must be shaken or otherwise agitated before use. Normal safety precautions for
handling fine particulate matter are suggested, such as the use of safety glasses, breathing
protection, gloves and a laboratory coat.
6.
Method of Preparation: The material was crushed, dry-milled and air-classified to <54um.
Wet sieve particle size analysis of random samples confirmed the material was 98.5% <54um. It
was then homogenized in a double cone blender, systematically divided and sealed into 1kg
Laboratory Packs. Explorer Packs are subdivided from the Laboratory packs as required.
Samples were randomly selected for homogeneity testing and third party analysis. Statistical
analysis of both homogeneity and consensus test results were carried out by an independent
statistician.
7.
Methods of Analysis requested:
1.
2.
3.
4.
5.
Co, Cu. Fusion AAS or ICP-OES (F).
Multi-acid digest multi-element scan - ( to include Co, Cu ). ICP-OES or ICP-MS (M/ICP).
Aqua regia digest – Co, Cu. ICP-OES or ICP-MS (P).
Pressed pellet multi-element scan - (to include Co, Cu ) (XRF).
Majors ( Al2O3, CaO, Cr2O3, Fe2O3, K2O, MgO, MnO, Na2O, SiO2, TiO2. LOI. ) XRF
fusion.
6. SG. Gas pycnometer.
8.
Information requested:
1.
2.
3.
4.
5.
State and provide brief description of analytical techniques used.
State aliquots used for all determinations.
Results for individual analyses to be reported.
All results for base metals to be reported in ppm.
Report all QC data, to include replicates, blanks and certified reference materials used.
9.
Method of Certification: Twenty two laboratories were each given eight packages,
comprising eight samples scientifically selected from throughout the batch. Seventeen laboratories
reported results in time for certification
Final limits were calculated after first determining if all data was compatible within a spread
normally expected for similar analytical methods done by reputable laboratories. Data from any one
laboratory was then removed from further calculations when the mean of all analyses from that
laboratory failed a “t test” of the global means of the other laboratories. The means and standard
deviations were then re-calculated using all remaining data. Any analysis that fell outside of the
new two standard deviations was removed from the ensuing data base. The mean and standard
deviations were again calculated using the remaining data.
The “between-laboratory” standard deviation is used in the calculation to eliminate technically and
statistically invalid data. Upper and lower limits are based on the standard deviation of the
3
remaining data, which reflect individual analyses and can be used to monitor accuracy in routine
laboratory quality control. This is different to limits based on standard deviations derived from
grouped set of analyses (see 12), which provide important measures for precision and trueness,
but which are less useful for routine QC.
Standards with an RSD of near or less than 5 % are termed “Certified”, RSD’s of between near 5 %
and 15 % are termed “Provisional”, and RSD’s over 15 % are termed “Informational”.
10.
Participating Laboratories: The 17 out of 22 laboratories that provided results timeously
were (not in same order as in the table of assays):
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
Activation Laboratories Pty Ltd (ActLabs) CA
Alex Stewart International Corporation Zambia
ALS Chemex Laboratory Group Brisbane Australia
ALS Chemex Laboratory Group Johannesburg SA
ALS Chemex Laboratory Group Vancouver CA
Genalysis Laboratory Services (South Africa) Pty
Genalysis Laboratory Services W Australia
Intertek Utama Services (Indonesia)
Set Point Laboratories (Isando) SA
SGS Australia Pty Ltd (Newburn) WA
SGS Durango (Mexico)
SGS Geosol Laboratories Ltda (Brazil)
SGS Mineral Services Callao (Peru)
SGS Mineral Services Lakefield (Canada)
SGS South Africa (Pty) Ltd - Booysens JHB
SGS Toronto (Canada)
Ultra Trace (Pty) Ltd WA
11.
Assay Data: Data as received from the laboratories for the important certified elements
listed on p1 is set out below
Lab
Code
C
C
C
C
C
C
C
C
D
D
D
D
D
D
D
D
E
E
E
E
E
E
E
E
G
G
G
G
G
G
G
G
H
H
H
H
H
H
H
H
Co
Co
Co
F
M/ICP P
ppm ppm ppm
4710 4800
4570 4870
4560 4760
4510 4770
4440 4790
4510 4740
4570 4760
4630 4760
4666 4209 4310
5155 4060 4459
5072 4181 4420
5033 4199 4475
4978 4220 4464
4361 3901 4407
4408 4089 4610
4682 4179 4508
4350 4650
4420 4780
4300 4900
4380 4740
4470 5170
4360 4840
4500 4710
4580 4800
4420 4760 4620
4620 4800 4620
4520 4840 4720
4380 4830 4700
4540 4850 4720
4820 4820 4760
4680 4740 4660
4680 4780 4670
4840
4480
4790
4510
4800
4510
4750
4430
4780
4530
4770
4470
4690
4540
4810
4460
Co
XRF
ppm
Cu
Cu
F
M/ICP
ppm
ppm
180000
184000
186000
186000
187000
185000
181000
186000
191000
187000
188000
186000
187000
189000
187000
186000
181000
184000
182000
181000
183000
187000
187000
186000
191000
189000
190000
190000
193000
187000
182000
190000
181000
184000
184000
181000
184000
187000
180000
179000
Cu
P
ppm
185000
180000
186000
188000
183000
187000
183000
187000
Cu
XRF
ppm
Al2O3
XRF
%
5.84
5.91
5.93
5.93
5.80
5.95
5.59
5.74
6.01
5.84
6.01
5.95
5.73
5.90
5.93
5.97
6.03
6.05
6.05
6.04
6.05
6.04
6.06
6.05
5.95
6.09
6.07
5.99
5.91
6.04
6.07
6.04
CaO Cr2O3 Fe2O3 K2O
XRF
XRF
XRF
XRF
%
%
%
%
0.13
8.74 0.87
0.11
8.98 0.88
0.11
8.94 0.87
0.11
8.84 0.86
0.11
8.86 0.88
0.11
8.65 0.86
0.11
8.66 0.86
0.11
8.69 0.88
0.11
9.26 0.90
0.11
9.18 0.88
0.11
8.96 0.89
0.11
8.85 0.87
0.11
8.94 0.89
0.11
8.66 0.88
0.11
9.24 0.89
0.11
9.25 0.89
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.13
0.13
0.14
0.12
0.15
0.15
0.15
0.14
4
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.06
0.04
0.05
0.06
0.06
0.05
0.06
0.04
9.24
9.25
9.23
9.23
9.21
9.22
9.22
9.24
9.35
9.35
9.33
9.39
9.36
9.29
9.29
9.35
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.89
0.93
0.90
0.90
0.92
0.92
0.94
0.93
0.92
MgO MnO Na2O SiO2
XRF XRF XRF XRF
%
%
%
%
3.08 0.09 0.09
3.03 0.09 0.08
3.10 0.09 0.08
3.03 0.09 0.08
2.92 0.09 0.08
2.92 0.09 0.11
2.95 0.09 0.08
2.92 0.09 0.08
2.98 0.10 0.08
2.87 0.09 0.08
2.98 0.10 0.08
2.97 0.09 0.08
2.85 0.09 0.08
2.95 0.09 0.08
2.95 0.09 0.08
2.97 0.09 0.08
0.07
0.08
0.07
0.08
0.07
0.07
0.07
0.08
2.97 0.09 0.08 43.15
2.97 0.09 0.08 43.18
2.95 0.09 0.08 43.19
2.95 0.09 0.08 43.18
2.95 0.09 0.08 43.18
2.95 0.09 0.08 43.14
2.97 0.09 0.08 43.20
2.97 0.09 0.08 43.18
2.75 0.12 0.05 42.81
2.78 0.11 0.08 42.83
2.74 0.11 0.07 42.72
2.76 0.11 0.05 42.89
2.79 0.11 0.05 42.93
2.82 0.11 0.07 42.79
2.82 0.12 0.05 42.88
2.84 0.12 0.07 42.78
TiO2
XRF
%
LOI
0.45
0.44
0.44
0.44
0.43
0.44
0.44
0.44
0.47
0.47
0.47
0.49
0.50
0.47
0.47
0.47
12.21
12.16
12.19
12.15
12.20
12.12
12.18
12.13
9.10
9.17
9.10
9.10
9.07
9.03
8.97
9.02
%
S Comb
LECO
%
SG
pyc
3.30
3.31
3.29
3.31
3.29
3.31
3.30
3.29
Assay data (cont)
Lab
Code
I
I
I
I
I
I
I
I
J
J
J
J
J
J
J
J
L
L
L
L
L
L
L
L
M
M
M
M
M
M
M
M
O
O
O
O
O
O
O
O
P
P
P
P
P
P
P
P
Q
Q
Q
Q
Q
Q
Q
Q
R
R
R
R
R
R
R
R
S
S
S
S
S
S
S
S
T
T
T
T
T
T
T
T
U
U
U
U
U
U
U
U
V
V
V
V
V
V
V
V
Co
Co
Co
F
M/ICP
P
ppm ppm ppm
4900
4900
4800
4800
4900
4900
4800
4800
4740 4890 4700
4720 4750 4710
4860 4890 4770
4800 4930 4860
4640 4970 4820
4700 4770 4760
4710 4690 4720
4900 4840 4800
4870 4670
4850 4700
4820 4600
4850 4690
4900 4660
4820 4640
4840 4710
4850 4610
5030 4650
4970 4480
4870 4510
4960 4560
5010 4480
4940 4470
4910 4600
4780 4490
4758 4891 4903
4714 4757 4800
4798 4813 4970
4829 4877 5055
4605 4816 4855
4831 4857 4898
4627 4932 4937
4732 4788 4878
4500
4502
4542
4531
4494
4834
4630
4535
4250 3960
4280 4080
4370 3980
4350 4070
4400 4070
4390 4040
4270 4060
4260 3990
3600 4600
3700 4600
3800 4600
3600 4500
3600 4600
3500 4600
3700 4700
4300 4600
5073
5138
5062
4925
5100
5112
5265
5071
3870 4940
4180
4150 4918
3980
4010 5049
4070
3940 5056
4010 5071
4478 4216
4484 4192
4465 4233
4488 4186
4469 4189
4497 4176
4467 4178
4477 4205
4920 5320 4840
4920 5600 4800
4900 5540 4880
4870 5350 4860
4840 5470 4620
4750 5160 4690
4750 5620 4590
4870 5550 4840
Co
XRF
ppm
Cu
F
ppm
185000
180500
186500
182500
177500
179500
177500
186000
4900
4900
5100
5000
4900
5100
5000
5000
184104
184393
185069
186267
177463
187238
181333
192177
194677
193059
192719
194377
198041
192728
194330
194991
188000
184000
187000
184000
183000
183000
187000
183000
Cu
M/ICP
ppm
184400
187300
184000
184900
180900
183000
184500
183000
196000
184500
193000
196500
195500
190500
187500
193000
186000
186000
184500
186500
185500
187000
185500
186000
186000
191500
187500
186500
186000
185500
183000
181500
191957
190308
188895
192019
190736
192025
193678
188247
183103
182641
181018
180018
178229
191676
186470
182598
193000
186000
187000
191000
181000
188000
190000
187000
186000
185000
185000
181000
187000
186000
188000
188000
Cu
P
ppm
191000
195500
195000
197500
196000
198000
195500
199000
184500
186000
184000
187000
185500
183000
184500
183000
184500
181500
183500
183000
183000
181000
184500
183500
192891
192916
192208
187474
183991
189264
191471
192337
181000
178000
180000
182000
182000
182000
187000
178000
Cu
XRF
ppm
191500
191500
194000
194000
191500
193500
192500
191500
197070
197387
197072
196475
197381
197080
195784
196635
191000
194000
199000
197000
190000
196000
188000
194000
4400
4500
4500
4500
4500
4500
4400
4400
182000
181000
182000
179000
181000
179000
179000
177000
185700
186300
185600
186500
185800
185500
186000
185900
212000
217000
212000
213000
214000
201000
215000
201000
186100
185700
183700
184300
183300
183900
184000
185200
173000
172000
189000
183000
178000
171000
171000
179000
190000
193000
192000
189000
193000
193000
191000
193000
Al2O3
XRF
%
5.71
5.88
5.73
5.88
5.80
5.53
5.82
5.82
5.68
5.65
5.58
5.65
5.66
5.78
5.80
5.70
CaO Cr2O3 Fe2O3
XRF
XRF
XRF
%
%
%
0.11 0.03
9.95
0.11 0.03 10.25
0.13 0.03
9.71
0.13 0.03
9.94
0.11 0.03 10.11
0.13 0.03 10.05
0.13 0.03
9.94
0.11 0.03
9.80
0.09 0.04
8.95
0.09 0.04
8.95
0.08 0.03
8.72
0.08 0.04
8.83
0.08 0.04
8.86
0.09 0.04
9.03
0.10 0.04
9.04
0.13 0.04
8.95
K2O
XRF
%
0.72
0.72
0.72
0.72
0.72
0.80
0.82
0.72
0.83
0.82
0.81
0.83
0.82
0.84
0.84
0.82
MgO
XRF
%
2.82
2.88
2.88
2.91
3.02
2.93
2.93
2.96
2.86
2.84
2.79
2.83
2.83
2.87
2.91
2.86
MnO Na2O SiO2
XRF XRF XRF
%
%
%
TiO2
XRF
%
LOI
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.17
0.17
0.18
0.19
0.19
0.20
0.21
0.21
41.90
42.10
41.00
41.30
41.50
42.30
42.60
41.90
0.42
0.42
0.41
0.41
0.42
0.43
0.43
0.42
11.95
12.05
12.00
11.95
12.00
11.90
11.95
12.90
0.10
0.10
0.10
0.11
0.11
0.10
0.10
0.10
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.03
0.03
0.03
0.03
0.03
0.03
0.02
0.03
0.04
0.04
0.03
0.03
0.03
0.03
0.03
0.03
9.39
9.41
9.40
9.43
9.37
9.41
9.42
9.41
9.79
9.59
9.68
9.81
9.61
9.74
9.89
9.56
0.89
0.88
0.88
0.89
0.88
0.88
0.89
0.88
0.97
0.96
0.97
0.97
0.97
0.97
0.97
0.97
2.98
3.00
2.98
3.01
2.98
2.99
2.98
3.00
0.10
0.10
0.10
0.09
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.09
0.08
0.08
0.09
0.08
0.08
0.09
0.08
43.20
43.20
43.30
43.30
43.10
43.10
43.30
43.30
0.43
0.43
0.43
0.43
0.43
0.43
0.43
0.43
12.25
12.32
12.21
12.32
12.26
12.27
12.34
12.33
6.08
6.04
6.06
6.05
6.03
6.07
6.08
6.07
5.20
5.20
5.20
5.20
5.20
5.10
5.20
5.20
5.94
5.94
5.95
5.90
5.96
5.90
5.91
5.86
0.13
0.14
0.13
0.13
0.12
0.14
0.14
0.12
0.10
0.10
0.09
0.08
0.08
0.09
0.09
0.09
0.12
0.13
0.12
0.12
0.12
0.12
0.12
0.12
0.03
0.03
0.02
0.03
0.02
0.03
0.03
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
9.33
9.29
9.24
9.27
9.24
9.29
9.31
9.31
12.48
12.49
12.50
12.55
12.44
12.49
12.43
12.52
9.27
9.21
9.23
9.23
9.22
9.27
9.23
9.25
0.88
0.87
0.87
0.88
0.88
0.88
0.88
0.89
0.86
0.85
0.84
0.84
0.83
0.84
0.84
0.85
0.88
0.88
0.88
0.88
0.87
0.88
0.88
0.88
2.01
2.00
1.99
1.96
2.00
1.98
1.97
2.01
3.20
3.20
3.20
3.20
3.20
3.20
3.20
3.20
2.87
2.85
2.88
2.86
2.90
2.89
2.87
2.90
0.10
0.10
0.10
0.10
0.11
0.10
0.10
0.09
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.09
0.10
0.10
0.10
0.09
0.09
0.09
0.10
6.24
6.26
6.31
6.16
6.35
6.29
6.23
6.23
0.13
0.13
0.17
0.12
0.16
0.17
0.13
0.13
0.05
0.04
0.05
0.05
0.05
0.06
0.04
0.04
9.17
9.16
9.49
9.15
9.28
9.29
9.12
9.14
0.90
0.85
1.10
0.87
1.04
1.08
0.86
0.92
2.91
2.94
2.99
2.90
2.96
2.94
2.93
2.92
0.09
0.10
0.10
0.10
0.10
0.10
0.10
0.10
5.97
6.01
5.98
6.07
5.96
6.01
6.02
6.02
5
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.03
0.04
0.03
0.04
0.03
0.06
0.04
0.01
0.07
0.07
0.07
0.07
0.07
0.07
0.07
0.07
0.24
0.26
0.34
0.25
0.28
0.34
0.23
0.25
%
S Comb
LECO
%
0.80
0.88
0.88
0.83
0.96
0.94
0.81
0.86
SG
pyc
3.21
3.06
3.32
3.27
3.32
3.06
3.26
3.16
3.17
3.15
3.13
3.17
3.16
3.16
3.14
3.14
0.89
0.89
0.89
0.90
0.88
0.88
0.89
0.90
3.06
3.12
3.24
3.21
3.22
3.11
3.23
3.27
3.13
3.21
3.20
3.19
3.21
3.18
3.20
3.18
43.33
43.19
42.95
43.17
43.10
43.17
43.23
43.33
37.40
36.80
37.40
36.80
37.10
36.70
37.20
37.00
42.50
42.50
42.60
42.60
42.50
42.60
42.70
42.70
0.45
0.46
0.45
0.46
0.50
0.49
0.46
0.45
0.49
0.49
0.49
0.50
0.49
0.50
0.49
0.49
0.44
0.45
0.44
0.44
0.44
0.44
0.46
0.45
12.20
12.20
12.20
12.20
12.20
12.20
12.20
12.20
43.20
43.50
43.50
43.20
43.70
43.20
43.30
43.40
0.45
0.44
0.45
0.45
0.45
0.46
0.45
0.45
12.38
12.61
13.10
12.56
12.56
13.14
12.47
12.34
3.16
3.18
3.19
3.19
3.16
3.16
3.19
3.20
0.72
0.79
0.82
0.76
0.79
0.79
0.84
0.83
3.17
3.19
3.19
3.15
3.18
3.18
3.19
3.19
12.
Measurement of Uncertainty: (ref Dr Hugh Bartlett, Hugh Bartlett Consulting CC.)
The samples used in the certification process were selected in such a way as to represent the
entire batch of material and were taken from the final packaged units; therefore all possible sources
of uncertainty (sample uncertainty and measurement uncertainty) are included in the final
combined standard uncertainty determination.
The uncertainty measurement takes into consideration the between lab and the within lab
variances and is calculated from the square roots of the variances of these components using the
formula:
Combined standard uncertainty=sqrt((between lab.var/no of labs) + ( mean square within lab.var /no of assays))
These uncertainty measurements may be used, by laboratories, as a component for calculating the
total uncertainty for method validation according to the relevant ISO guidelines.
Analyte
Co
Co
Co
Cu
Cu
Cu
Al2O3
CaO
Cr2O3
Method
F
M/ICP
P
F
M/ICP
P
Unit
ppm
ppm
ppm
ppm
ppm
ppm
S '
174.2
235.7
141.5
4824
3111
4700
σL ²
133.6
187.9
110.3
3631
1915
4641
SW ³
126.3
70.07
64.00
2768
2408
2241
CSU ⁴
53.39
54.72
33.97
1191
701.1
1781
XRF
XRF
%
%
0.145
0.016
0.121
0.012
0.057
0.008
0.039
0.003
XRF
%
0.004
0.004
0.002
0.001
Fe2O3
XRF
%
0.300
0.246
0.105
0.000
K2O
LOI
MgO
MnO
Na2O
XRF
%
%
%
%
0.038
0.168
0.063
0.005
0.031
0.213
0.049
0.003
0.011
0.055
0.037
0.004
0.010
0.096
0.017
0.001
XRF
%
0.050
0.044
0.008
0.013
SiO2
XRF
%
0.392
0.409
0.135
0.156
TiO2
SG
XRF
pycnometer
%
0.024
0.058
0.024
0.053
0.009
0.034
0.009
0.020
XRF
XRF
1. S - Std Dev for use on control charts.
2. σ L - Betw Lab Std Dev, for use to calculate a measure of accuracy.
3. S W - Within Lab Stc Dev, for use to calculate a measure of precision.
4. CSU - Combined Standard Uncertainty, a component for use to calculate
the total uncertainty in method validation.
13.
Certified values: The Certified, Provisional and Informational values listed on p1 and p2 of
this certificate fulfill the AMIS statistical criteria regarding agreement for certification and have been
independently validated by Dr Barry Smee.
14.
Metrological Traceability: The values quoted herein are based on the consensus values
derived from statistical analysis of the data from an inter laboratory measurement program.
Traceability to SI units is via the standards used by the individual laboratories, the majority of which
are accredited, who have maintained measurement traceability during the analytical process.
15.
Certification: AMIS0248 is a new material.
16.
Period of validity: The certified values are valid for this product, while still sealed in its
original packaging, until notification to the contrary. The stability of the material will be subject to
continuous testing for the duration of the inventory. Should product stability become an issue, all
customers will be notified and notification to that effect will be placed on the www.amis.co.za
website.
6
17.
Minimum sample size: The majority of laboratories reporting used a 0.5g sample size for
the ICP. This is the recommended minimum sample size for the use of this material.
18.
Availability: This product is available in Laboratory Packs containing 1kg of material and
Explorer Packs containing custom weights (from 50g to 250g) of material. The Laboratory Packs
are sealed bottles delivered in sealed foil pouches. The Explorer Packs contain material in
standard geochem envelopes, vacuum sealed in foil pouches.
19.
Recommended use: The data used to characterize this CRM has been scrutinized using
outlier treatment techniques. This, together with the number of participating laboratories, should
overcome any “inter-laboratory issues” and should lead to a very accurate measure for the given
methods, notwithstanding the underlying assumption that what the good inter-laboratory labs
reported was accurate. However an amount of bad data might have had an effect, resulting in
limits which in some situations might be too broad for the effective monitoring of a single analytical
method, laboratory or production process. Users should set their own limits based on their own
data quality objectives and control measurements, after determining the performance
characteristics of their own particular method, using a minimum of 20 analyses using this CRM.
User set limits should normally be within the limits recommended on p1 and 2 of this certificate.
20.
Legal Notice: This certificate and the reference material described in it have been
prepared with due care and attention. However AMIS, Set Point Technology (Pty) Ltd, Mike
McWha, Dr Barry Smee and Smee and Associates Ltd; accept no liability for any decisions or
actions taken following the use of the reference material.
18 October 2012
Certifying Officers:
African Mineral Standards:_______________________________________
Mike McWha
BSc (Hons), FGSSA, MAusIMM, Pr.Sci.Nat
Geochemist:____________________________________________________
Barry W. Smee
BSc, PhD, P.Geo, (B.C.)
7
Uncertified trace element statistics
Analyte
Method
Ag
M/ICP
Al
M/ICP
As
M/ICP
Ba
M/ICP
Be
M/ICP
Bi
M/ICP
Ca
M/ICP
Cd
M/ICP
Ce
M/ICP
Co
XRF
Cr
M/ICP
Cs
M/ICP
Cu
XRF
Dy
M/ICP
Er
M/ICP
Eu
M/ICP
Fe
M/ICP
Ga
M/ICP
Gd
M/ICP
Ge
M/ICP
Hf
M/ICP
Ho
M/ICP
In
M/ICP
K
M/ICP
La
M/ICP
Li
M/ICP
Lu
M/ICP
Mg
M/ICP
Mn
M/ICP
Mo
M/ICP
Na
M/ICP
Nb
M/ICP
Nd
M/ICP
Ni
M/ICP
P
M/ICP
Pb
M/ICP
Pr
M/ICP
Rb
M/ICP
S
M/ICP
S
Comb/LECO
Sb
M/ICP
Sc
M/ICP
Se
M/ICP
Si
M/ICP
Sm
M/ICP
Sn
M/ICP
Sr
M/ICP
Ta
M/ICP
Tb
M/ICP
Te
M/ICP
Th
M/ICP
Ti
M/ICP
Tl
M/ICP
Tm
M/ICP
U
M/ICP
V
M/ICP
W
M/ICP
Y
M/ICP
Yb
M/ICP
Zn
M/ICP
Zr
M/ICP
Unit
ppm
%
ppm
ppm
ppm
ppm
%
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
%
ppm
ppm
ppm
ppm
ppm
ppm
%
ppm
ppm
ppm
%
ppm
ppm
%
ppm
ppm
ppm
ppm
ppm
ppm
ppm
%
%
ppm
ppm
ppm
%
ppm
ppm
ppm
ppm
ppm
ppm
ppm
%
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
Mean
0.98
3.18
90.7
106
9.8
11.7
0.08
0.23
76.5
4725
213
0.6
193703
3.22
1.71
0.44
6.59
18.9
3.66
0.35
2.25
0.61
3.13
0.72
38.2
58.0
0.22
1.80
730
8.05
0.06
7.51
27.9
134
3983
28.1
8.36
23.1
0.85
0.86
3.02
14.5
21.2
19.9
4.0
2.2
42.2
0.52
0.55
0.14
7.26
0.12
0.58
0.23
25.3
208
1.26
14.1
1.58
69.1
75.6
8
2SD
3.03
0.31
32.5
20.0
3.73
6.22
0.02
0.38
13.6
559
66.0
0.1
5123
0.59
0.21
0.05
0.66
9.0
0.64
0.15
1.89
0.10
0.65
0.11
16.7
14.1
0.03
0.22
86.6
3.04
0.02
3.06
2.31
25.0
563
42.3
1.38
10.7
0.07
0.10
4.85
3.5
10.1
0.3
0.38
0.36
4.83
0.51
0.13
0.10
1.05
0.13
2.28
0.04
3.41
31.6
0.8
5.8
0.31
22.2
46.1
RSD%
155
4.8
17.9
9.5
19.1
26.5
10.6
82.6
8.86
5.91
15.5
10.8
1.32
9.16
6.08
5.37
5.0
23.7
8.82
21.6
41.8
7.76
10.3
7.66
21.9
12.2
7.98
6.14
5.9
18.9
15.6
20.4
4.14
9.34
7.07
75.2
8.26
23.1
4.17
6.05
80.4
12.0
23.8
0.86
4.78
7.98
5.72
48.6
11.9
36.8
7.23
50.1
197.7
8.89
6.73
7.61
32.9
20.4
9.68
16.1
30.5
n
33
75
85
63
72
42
80
40
38
16
75
32
24
31
29
31
88
55
31
8
26
31
38
80
79
80
38
81
80
88
80
38
31
90
64
79
32
40
55
23
48
71
40
7
31
34
73
37
38
21
37
69
43
29
38
85
39
79
40
80
73