SARM - MINTEK | MINTEK

SARM

Contents Page No.

Preface 4

IGNEOUS ROCK REFERENCE MATERIALSSARM 1. NIM-G Granite 7SARM 2. NIM-S Syenite 7SARM 3. NIM-L Lujavrite 7SARM 4. NIM-N Norite 7SARM 5. NIM-P Pyroxenite 7SARM 6. NIM-D Dunite 7SARM 39. Kimberlite 7SARM 48. Fluorspar Granite 7SARM 50. Dolerite 7

Table 1. Certified and Uncertified Values for the Major elements in SARM 1 8to SARM 6, in % Oxide

Table 2. Certified and Uncertified Values for the Minorand Trace Elements in SARM 1 to SARM 6, 9in mg/kg of the Elements

Table 3. Certified and Uncertified Values for the Major Elements in SARM 39, 40, 48 and 50 in % Oxide 10Table 4. Certified and Uncertified Values for the Minor and Trace Elements 11in SARM 39, 40, 48 and 50 in mg/kg of the Elements

References 10

ASSORTED REFERENCE MATERIALS(Including sedimentary rocks, metamorphic rocks and minerals)

SARM 41. Carbonaceous Shale 13SARM 42. Soil 13SARM 43. Magnesite 13SARM 44. Sillimanite Schist 13SARM 45. Kinzingite 13SARM 46. Stream Sediment 13SARM 47. Serpentinite 13SARM 49. Quartz 13SARM 51. Stream Sediment 13SARM 52. Stream Sediment 13

Table 5. Certified and Uncertified Values for the Major Elements in 14SARM 41 to 47, 49, 51 and 52 in % Oxide Table 6. Certified and Uncertified Values for the Minor and Trace Elements 15in SARM 41 to 47, 49, 51 and 52 in mg/kg of the Elements

ORE AND SEMI-PROCESSED ORE REFERENCE MATERIALSSARM 131. Chrome ore 17SARM 132. Hematite ore 17SARM 12. Magnetite ore 17SARM 13. Zirconium concentrate 17SARM 14. Fluorspar (Acid Grade, Buffalo) 17SARM 15. Fluorspar (Acid Grade, Zeerust) 17SARM 16. Manganese ore (Wessels) 18SARM 17. Manganese ore (Mamatwan) 18SARM 32. Phosphate rock (Phalaborwa) 18SARM 33. Ferrosilicon (c 15 % Si) 18SARM 34. Andalusite 19SARM 38. Vanadium pentoxide 19

Table 7 – Certified Values Of The Major Constituents 20

Table 8 – Certified Values Of The Major Constituents 21

Table 9 – Certified Values Of The Major And Minor Constituent 22

Table 10 – Certified Values Of The Major And Minor Constituents 23


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NOTE: The dot is more frequently used than the comma to indicate a decimal when reporting results for certified reference materials.For this reason the dot is used in this catalogue.

Contents Page No.








COAL REFERENCE MATERIALSSARM 18. Coal (Witbank) 33SARM 19. Coal (OFS) 33SARM 20. Coal (Sasolburg) 33




URANIUM REFERENCE MATERIALSSARM 21. UREM 1. Acid leach residue 38SARM 23. UREM 3. Pyrite concentrate 38SARM 24. UREM 4. Slimes dam material 38SARM 26. UREM 6. Pyrite concentrate 38SARM 27. UREM 7. Acid leach residue 38SARM 28. UREM 8. Acid plant calcine 38SARM 31. UREM 11. Head sample (low grade) 38

Table 21 - Sarm 21 - 31 Urem Reference Materials Certified Values And Their 95% Confidence Limits 38

GOLD-BEARING MATERIALSSARM 56. Gold Calcine 40Table 22. Certified value and their 95% confidence limits 40

HEAVY MINERALS PROCESSED MATERIALSSARM 57. Titanium Slag (RBM) 42SARM 62. Zircon (RBM) 42

Table 23 - Certified Values And Their 95 % Confidence Limit 43

Table 24 - Certified Value And Their 95 % Confidence Limit 44

SULPHIDE ORESSARM 114. Sulphur 45SARM 115. Sulphur 45SARM 116. Sulphur 45SARM 117. Sulphur 45SARM 118. Sulphur 45

Table 25. SARM 114 to 118 Certified Values and 95% confidence limits 46

Purchasing Procedure 47

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T H E S A R M P R O G R A MP R E F A C E

Reference materials have been made at Mintek since the mid 1970’s, throughout this period best practices of the time have been used for manufacture and certification. These reference materials have been sold interna-tionally in many different countries under the brand name SARM, (South African Reference Material). SARMs have enjoyed prestige and recognition till this day and they can be seen on many laboratories shelves.

SARMs have been listed with ISO/REMCO, a committee of the International Organization for Standardization, Geneva, dealing with reference materials. Periodically Mintek takes part in the various working groups involved in the development of the guides. Also at these working groups information is shared in the best prac-tices for use and development of reference Materials. An ISO REMCO mirror committee of which Mintek is a member. The greatest care is taken in: 1) the selection, preparation and packing of reference materials to ensure their homogeneity. 2) the analysis of reference materials are by both competent and accredited national and international laboratories, 3) the statistical evaluation of the results are to ensure the best estimate of true values. ISO guides developed at REMCO are used in the development of the SARMs. The SARMs made at Mintek are “Reference Materials” as in accordance with ISO guide 30 “Terms and conditions as used in connection with reference materials.”

The certificate which is accompanied by each reference material should be consulted to obtain accurate infor-mation about the certified value, confidence limits and inter laboratory standard deviation. The certificates are available from Mintek or can be downloaded from http://www.mintek.co.za.All information pertaining to reference materials can be found in ISO GUIDE 30 to 35.

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The six materials comprising the NIMROC series (SARM 1 to 6) have been analysed by many laboratories throughout the world. (For a complete list of participating laboratories, see the various certificates.) Statistical tests have been used, values have been established for the major, minor, and trace elements.

Certified and uncertified values for the major elements are given in Table 1 on page 8 and certified and uncerti-fied values for the minor and trace elements are given in Table 2 on page 9.

Reports issued on the NIMROC series are listed as No. 1 to 5 on page 11.

This reference material is a granitic rock-type which consists mainly of quartz and K-feldspar, and has smaller amounts of mica and Na-feldspar. The reference material is used in the analysis of rock samples, some non-metalliferous ores, and geochemical samples.

I G N E O U S R O C KRE F E R E N C E M A T E R I A L S

[01]

This reference material is a granitic rock-type which consists mainly of quartz and K-feld-spar, and has smaller amounts of mica and Na-feldspar. The reference material is used in the analysis of rock samples, some non-metalliferous ores, and geochemical samples.

This reference material is a syenitic rock-type which consists mainly of K-feldspar and has minor amounts of quartz, Na-feldspar, and alkali-amphiboles. The reference material is used in the analysis of silicate samples, but can also be used as an RM for the analysis of non-metalliferous raw materials and geochemical prospecting samples.

This rock-type is a lujavrite and is an under saturated igneous rock which consists of nepheline, sphene, aegirine, magnetite, and some feldspar. This reference material is useful for the analysis of silicate rocks, but can be used in the analysis of some non-metal-liferous ores and as a geochemical exploration reference material. Because of its unusual trace element concentrations it is also a valuable trace element reference material.

This rock-type is a norite which consists of orthopyroxene, plagioclase, magnetite, ilmen-ite, and clinopyroxene and minor amounts of quartz and alteration products. It is a useful silicate reference material for intermediate rocks but is also used for the analysis of geochemical exploration samples.

This rock-type is a pyroxenite which consists of orthopyroxene, clinopyroxene, and plagioclase and minor amounts of olivine and chromite. This reference material is used for the analysis of mafic silicate rocks but can also be used for the analysis of geochemical exploration samples.

This rock-type is a dunite and consists of olivine and orthopyroxene and minor amounts of clinopyroxene, plagioclase, and chromite. This reference material is used in the analysis of basic silicate rock samples and can also be used for the analysis of non-metalliferous ores and geochemical exploration samples.

This material comes from the Kimberley area in Northern Cape. It consists of large round grains of olivine, ilmenite, garnet, mica and pyroxene which are set in a fine grained micro-crystalline matrix.

This comes from the Buffalo Mine in Northern Province. It consists of quartz, orthoclase, microcline, albite and smaller amounts of hornblende and fluorite.

This comes from the Jamestown District of Eastern Cape. It consists mainly of plagioclase and clinopyroxene with minor amounts of olivine, magnetite and ilmenite.

The following four materials have been analysed internationally. Certified and uncertified values for the major elements are given in Table 3 on page 10 and certified and uncertified values for the minor and trace elements are given in Table 4 on page 11.

A report issued on these and other certified reference materials is listed as No. 6 on page 11.

SARM 2NIM-SSYENITE

SARM 3NIM-L LUJAVRITE

SARM 4NIM-NNORITE

SARM 5NIM-PPYROXENITE

SARM 6NIM-DDUNITE

SARM 39KIMBERLITE

SARM 48FLUORSPAR GRANITE

SARM 50DOLERITE

SARM 1NIM-GGRANITE

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TABLE 1 - CERTIFIED AND UNCERTIFIED VALUES FOR THE MAJOR ELEMENTSIN SARM 1 TO SARM 6, IN % OXIDE

(3)* See key to Table 1.(R) certified value obtained by using the reported analytical results for total Fe.(c) certified value obtained by calculation from the certified values for FeO and Fe2O3.

KEY TO TABLE 1

1. A question mark (?) indicates an uncertified value.2. Where there are dashes, the values are given in mg/kg of the element in Table 2.3. “OTHERS “is the sum of the oxides of trace constituents that are present in concentrations large enough to affect the summation. They are reported individually as mg/kg of the element in Table 2.

Constituent

SARM 1 NIM-G Granite

SARM 2 NIM-S Syenite

SARM 3 NIM-L

Lujavrite

SARM 4 NIM-N Norite

SARM 5 NIM-P

Pyroxenite

SARM 6 NIM-D Dunite

SiO2

75.70

63.63

52.40

52.64

51.10

38.96

Al2O3 12.08 17.34 13.64 16.50 4.18 0.3 ? Fe2O3 0.6 ? 1.11 8.78 0.8? 0.87 0.71 FeO 1.30 0.30 1.13 7.47 10.59 14.63 MgO 0.06? 0.46 0.28 7.50 25.33 43.51 CaO 0.78 0.68 3.22 11.50 2.66 0.28 Na2O 3.36 0.43 8.37 2.46 0.37 0.04? K2O 4.99 15.35 5.51 0.25 0.09 0.01? MnO - - 0.77 0.18 0.22 0.22 TiO2 - - 0.48 0.20 0.20 - P2O5 - 0.12 - - - - Cr2O3 - - - - 3.50 0.42 NiO - - - - - 0.26 ZrO2 - - 1.49 - - - BaO - 0.27 - - - - SrO - - 0.54 - - - Nb2O5 - - 0.14 - - - Cl - - 0.12 - - - F 0.42 - 0.44 - - - H2O+ 0.49 0.22 2.31 0.33 0.26 0.30 CO2 0.10? 0.09 0.17 0.10? 0.08? 0.40? �

99.88?

100.00

99.97

99.93?

99.45?

100.04?

O/F. S. Cl 0.18 0.01 0.23 0.02 0.02 0.02 �

(corrected) 99.70? 99.99 99.56 99.91? 99.43? 100.02? OTHERS (3)* 0.29 0.14 0.29 0.22 0.23 0.11 TOTAL

99.99?

100.13

99.85

100.13?

99.66?

100.13?

Total Fe as Fe2O3. (R)

2.00

1.40

9.91

8.97

12.70

17.00 Total Fe as Fe2O3. (c)

2.04

1.44

10.04

9.10

12.64

16.97

8

KEY TO TABLE 2

1. Figures in parentheses are the 95 % confidence limits of the certified value (see Reference 5 on p.10 of this catalogue).2. A question mark indicates an uncertified, or tentative, value.3. Where no value is given, no certified or uncertified value has been assigned.

*Indicates that an order of magnitude for this element can be ascertained from the data in NIM report No. 1945 (see Reference 3). Orders of magnitude are similarly available for Ag, As, Au, B, Be, Bi, Cd, Cl, Cs, Hf, Mo, Sb, Sc and Ta.** Indicates that an order of magnitude for this element can be ascertained from the data in MINTEK Report No. M134 (see Reference 5). Orders of magnitude are similarly available for Er, Ho and Pr.

TABLE 2 - CERTIFIED AND UNCERTIFIED VALUES FOR THE MINOR AND TRACE ELEMENTSIN SARM 1 TO SARM 6, IN mg/kg OF THE ELEMENTS

Element

SARM 1 NIM-G Granite

SARM 2 NIM-S

Syenite

SARM 3 NIM-L

Lujavrite

SARM 4 NIM-N Norite

SARM 5 NIM-P

Pyroxenite

SARM 6NIM-D Dunite

Ba

120?

2 400

450

102

46 ?

10?

Ce 195(190-203) 11.9(9.6-14.4) 240? 6? ** ** Co * 3? * 58 110 208 Cr 12 12 10? 30? 24 000 2 900 Cu 12 19 13 14 18 10 Dy 17? 0.4? ** ** ** **

Eu 0.35(0.34-0.47)

0.30(0.27-0.38) 1.2(1.0-1.5)

0.63(0.59-0.69) 0.2? **

F 4 200 * 4 400 * * * Ga 27 11 54? 16 8? * Gd 14? ** ** ** ** ** La 109(100-116) 5? 250? 3? 2? 0.2? Li 12? * 48? * * * Lu 2? ** 0.4? 0.2? ** ** Mn 160 80 6 000 1 400 1 700 1 700 Nb 53 * 960 * * * Nd 72(67-84) 6? 48(35-57) 3? ** ** Ni 8? 7? * 120 555 2 040 P * 520 260 130? 90 40? Pb 40 5? 43 * * * Rb 325 530 190 * * * S * * 650? * * *

Sm 15.8(14.0-18.0) 1? 5? 0.8? ** **

Sr 10 62 4 600 260 32 3? Tb 3.0(2.4-3.5) ** 0.7? ** ** ** Th 51(48-55) 1.0(0.5-1.0) 66(58-72) ** ** ** Ti 540 265 2 900 1 200 1 200 120 Tm 2? ** ** ** ** ** U 15? * 14 * * * V 2? 10 81 220 230 40 Y 143(120-159) ** 22(15-27) 7? 5? **

Yb 14.2(12.8-16.0) 0.07? 3? 0.7? 0.6? **

Zn 50 10? 395 68 100 90 Zr 300 33? 11 000 23? * *

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TABLE 3 - CERTIFIED AND UNCERTIFIED VALUES FOR THE MAJOR ELEMENTSIN SARM 39, 48 AND 50, IN % OXIDE

KEY TO TABLE 3

1. An asterisk indicates and uncertified value.

2. Where there are dashes, the values are given in mg/kg of the element in Table 4.

Constituent

SARM 39 Kimberlite

SARM 48

Fluorspar Granite

SARM 50

Dolerite SiO2

33.44

67.11

51.56

Al2O3 4.29 11.24 15.28 Fe as Fe2O3 9.29 0.58 11.0 FeO 4.0* 0.2* 8.49 MgO 26.24 0.18 7.57 CaO 9.69 8.90 10.80 Na2O 0.5* 3.22 2.30 K2O 1.04 4.26 0.61 MnO 0.17 0.02 0.17 TiO2 1.58 0.10 0.86 P2O5 1.46 0.09* 0.15 Cr2O3 0.19 - -

10

REFERENCES

1. RUSSELL, BG et al. : Collection and preparation of standard rock samples. Report No. 332-1968 of the National Institute for Metallurgy.

2. RUSSELL, BG et al. : Preliminary report on the analysis of six NIMROC geochemical standard samples. Report No. 1351-1972 of the National Institute for Metallurgy.

3. STEELE, TW et al. : Analysis of the NIMROC reference samples for minor and trace elements. Report No. 1945-1978 of the National Institute for Metallurgy.

4. STEELE. TW et al. : Analysis of the NIMROC reference samples for major elements. Report No. 2016-1979 of the National Institute for Metallurgy.

5. HANSEN, RG et al. : The NIMROC reference materials: revised values for thorium, yttrium, lanthanum and the rare-earth elements. MINTEK Report No. M134-1984 of the Council for Mineral Technology.

6. RING, EJ : The preparation and certification of fourteen South African silicate rocks for use as reference materials. MINTEK Report No. M393-1989.

KEY TO TABLE 4

1. An asterisk indicates an uncertified value.

TABLE 4 - CERTIFIED AND UNCERTIFIED VALUES FOR THE MINOR AND TRACE ELEMENTS IN SARM 39, 40, 48 AND 50, IN mg/kg OF THE ELEMENTS

Constituent SARM 39

Kimberlite SARM 48

Fluorspar Granite SARM 50

Dolerite Ba

0.17�

290*

220

Ce 85* 850* 30* Co 77 40 Cr 23 357 Cu 58 10* 84 Ga 10* Mo 5* 5* Nb 110 202 10* Ni 994 85* Pb 25* 135 25* Rb 52 291 14 S� 0.15* 0.03* Sr 0.14� 29 195 Th 10* 113 6* V 109 8* 216 Y 17 436 23 Zn 70 53 81 Zr 239 300 86

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The following ten materials have been analysed internationally. Certified and uncertified values for the major elements are given in Table 5 on page 14 and certified and uncertified values for the minor and trace elements are given in Table 6 on page 15.

A report issued on these and other certified reference materials is listed as No. 6 on page 11.

A S S O R T E DRE F E R E N C E M A T E R I A L S

[02]

(Including sedimentary rocks, metamorphic rocks and minerals)

This comes from the Rustenburg area of North-West. As this material is a fine grained stream sediment, only information from X-ray diffraction analysis is available. The follow-ing minerals are present: quartz, ilmenite, magnetite, rutile with small amounts of plagioclase, pyroxenes and clay minerals.

SARM 42SOIL

This comes from the Kaapmuiden area of Mpumalanga. It consists mainly of magnetite with small amounts of quartz, magnetite, chlorite and secondary hematite.SARM 43

MAGNESITE

This comes from the Pofadder District in Northern Cape. It consists of sillimanite, musco-vite, biotite, chlorite and magnetite.SARM 44

SILLIMANITE SCHIST

This comes from the Augrabies area of Northern Cape. It consists primarily of biotite, quartz, orthoclase, garnet and accessory amounts of epidote, sillimanite, sericite and chlorite.

The material comes from a stream near Argent in Gauteng, Republic of South Africa. This material is a fine-grained stream sediment and consists of the following minerals (in decreasing order of abundance): Siderite, Quartz and Chlorite, respectively.

SARM 45KINZINGITE

SARM 46STREAM SEDIMENT

This comes from the M'Sauli mine in Mpumalanga. This is a completely serpentinized dunite with antigorite, magnetite, epidote and prehnite present.SARM 47

SERPENTINITE

This comes from the Pietersburg area of Northern Province. Apart from the quartz, acces-sory amounts of muscovite, chlorite and sericite are present.SARM 49

QUARTZ

This is a fine grained stream sediment and consists of the following minerals (in decreas-ing order of abundance): quartz, goethite, chlorite, hematite, kaolinite and illite.SARM 52

STREAM SEDIMENT

This comes from the Marico District of North-West. This is an extremely fine-grained rock consisting of quartz, sericite, chlorite, feldspars, clays and carbonaceous materials.SARM 41

CARBONACEOUSSHALE

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Constituent

SARM 41

CarbonaceousShale

SARM 42 Soil

SARM 43

Magnesite

SARM 44

Sillimanite Schist

SARM 45 Kinzingite

SARM 46 Stream

Sediment

SARM 47 Serpentinite

SARM 49

Quartz

SARM 51 Stream

Sediment

SARM 52 Stream

Sediment SiO2

56.67

74.09

5.99

34.84

49.62

35.90

36.30

99.6

33.81

57.81

Al2O3 13.50 10.03 0.06* 58.80 26.22 6.71 1.09 0.05* 11.87 9.38 Fe as Fe2O3 4.23 4.68 0.26 2.06 12.60 28.16 4.14 0.05* 18.36 19.71 FeO 0.3* 4.0* 0.1* 1.0* 10.0* 18.0* 0.4* 3.0* 4.0* MgO 8.10 1.92 44.11 0.1* 3.39 3.16 42.09 0.05* 0.92 0.60 CaO 1.50 0.89 0.75 0.14 0.78 1.32 0.1* 0.01* 0.86 0.37 Na2O 0.93 0.15* 0.05* 0.05* 0.84 0.28 0.05* 0.05* 0.07 0.1* K2O 1.39 0.45 0.04* 0.18 3.18 0.35 0.02* 0.01* 0.33 0.25 MnO 0.06 0.10 0.01* 0.03 0.10 1.14 0.06 0.01* 0.21 0.27 TiO2 0.55 0.36 0.01* 1.83 1.82 0.60 0.01* 0.01* 0.82 1.30 P2O5 0.05 0.04* 0.02* 0.10 0.08 0.11 0.02* 0.21 0.09 Cr2O3 - 0.63 - - - - 0.29 - - 0.19

TABLE 5 - CERTIFIED AND UNCERTIFIED VALUES FOR THE MAJOR ELEMENTSIN SARM 41 TO 47, 51 AND 52, IN % OXIDE

KEY TO TABLE 5

1. An asterisk indicates an uncertified value.2. Where there are dashes, the values are given in mg/kg of the element in Table 6.

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TABLE 6 - CERTIFIED AND UNCERTIFIED VALUES FOR THE MINOR AND TRACE ELEMENTSIN SARM 41 TO 47, 51 AND 52, IN mg/kg OF THE ELEMENTS

Constituent

SARM 41

CarbonaceousShale

SARM 42

Soil

SARM 43 Magnesite

SARM 44

Sillimanite Schist

SARM 45 Kinzingite

SARM 46 Stream

Sediment

SARM 47

Serpentinite

SARM 49

Quartz

SARM 51 Stream

Sediment

SARM 52 Stream

Sediment Ba

820

250*

25*

50*

900*

180*

75*

335*

410*

Ce 60* 30* 20* 220* 100* 110* 20* 120* 210* Co 15* 35 4 8* 41 56 79 60 81 Cr 123 195* 384 256 559 509 Cu 53 17 15* 10* 11 566 5* 268 219 Ga 20* 12* 55* 35* 5* 20* 15* Mo 5* 5* 15* 10* Nb 8 8* 96 27 9* 11 Ni 122 125 252 15* 80 125* 2 221 178 182 Pb 30* 10* 30* 20* 1.3%* 60* 0.52� 0.12� Rb 59 22 13 142 20* 37 20 S� 0.15* 0.02* 0.04* 0.03* 0.05* 0.17* 0.02* 0.24* 0.02* Sr 54 37 8 5 92 25 3* 5* 44 25 Th 12* 5* 50 21* 10* 11* V 139 94 395 266 225 16* 181 346 Y 17 11 84 63 20* 5* 21 20 Zn 76 44 10* 271 74 0.59 45 0.22� 264 Zr 146 192 406 322 101 121 250

KEY TO TABLE 61. An asterisk indicates an uncertified value.

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O R E A N D S E M I - P R O C E S S E D O R ER E F E R E N C E M A T E R I A L S

[03]

The material was supplied by Xstrata Wonderkop Plant. The material is described as a chrome ore. The intended use of the material is as a control sample in the analysis of sam-ples of a similar type. Verification of analytical methods for chrome ore. As a reference material for the calibration of equipment used for analysing similar materials.

SARM 131CHROME ORE

This material was supplied by Kumba Resources. The material is described as iron ore hematite.As a control sample in the analysis of samples of a similar type. Verification of analytical methods for Fe ore. As a reference material for the calibration of equipment used for analysing similar materials.

SARM 132HEMATITE ORE

This iron ore is a magmatic iron ore and the sample was obtained from the Phalaborwa Complex in Northern Province. The latter is an intrusive complex which consists of carbonatite and syenite, and the magnetite comes from the carbonatite. The ore consists mainly of magnetite and ilmenite, and has minor amounts of vallerite, chalcopyrite, calcite, and serpentine. Besides being useful as an iron ore reference material, this reference material can be used for the analysis of iron-rich geological samples, for geochemical samples, and in the calibration of instruments.

Certified values for this reference material, which are based on the results of the 34 partic-ipating laboratories, are listed below. (A complete list of participating laboratories is given in the certificate.)

SARM 12MAGNETITEORE

The zirconium concentrate sample was obtained from Tisand Limited of Richard's Bay, Kwazulu-Natal. The material consists mainly of zircon, with ilmenite, rutile, leucoxene, monazite, epidote and clinozoisite as minor components. Besides being useful as a zirco-nium concentrate reference material it can also be used for the calibration of instruments and as a reference material for the development of analytical techniques.

Certified values for this reference material, which are based on a statistical evaluation of the results from 11 laboratories, are listed below. (A complete list of participating laborato-ries is given in the certificate.)

SARM 13ZIRCONIUM CONCENTRATE

The acid grade fluorspar sample was obtained from the Buffalo Fluorspar Mine in North-West. The sample consists of fluorite with monazite, xenotime, apatite, cerite, seric-ite, hematite, and quartz as major components.

Besides being useful as an acid grade fluorspar reference material it can also be used for the calibration of instruments and as a reference material for the development of analytical techniques.


SARM 14FLUORSPAR (ACID GRADE, BUFFALO)

The acid grade fluorspar sample was obtained from Marico Fluorspar Mine in North-West. The sample consists of fluorite with calcite, dolomite, hematite and sphalerite as minor components. Besides being useful as an acid grade fluorspar reference material it can also be used for the calibration of instruments and as a reference material for the develop-ment of analytical techniques.


SARM 15FLUORSPAR (ACID GRADE, ZEERUST)

17

The manganese ore was obtained from the Wessels manganese mine in Northern Cape. The material is a manganese replacement ore in banded ironstone. The main minerals are hausmannite, braunite and hematite. Quartz and calcite are present in minor amounts.

Besides being useful as a manganese ore reference material, it can also be used for the calibration of instruments, and as a reference material for the development of analytical techniques.


SARM 16MANGANESE ORE(WESSELS)

The manganese ore was obtained from the Mamatwan manganese mine in Northern Cape. The material is a banded, oolitic ferrous manganese ore, the main mineral being hausmannite. Fine grained hematite, quartz, calcite and braunite are also present.

Besides being useful as a manganese ore reference material, it can also be used for the calibration of instruments, and as a reference material for the development of analytical techniques.


SARM 17MANGANESE ORE(MAMATWAN)

The material was supplied by the Phosphate Development Corporation Ltd (FOSKOR) of Phalaborwa, Northern Province. It is a high-grade export rock produced by phosphate beneficiation of the flotation tailings from Palabora Mining Company's (PMC) copper flota-tion process. It consists mainly of fluorapatite, with dolomite and calcite being present as minor constituents. Traces of phlogopite and vermiculite are present.

This reference material can be used as a referee standard by both the producers and buyers of this rock. It can also be used for the development of new analytical techniques for this type of material, and for the calibration of instruments.

The certified and uncertified values assigned for this reference material, based on the results submitted by 18 laboratories, are given below. (A complete list of participating labo-ratories is given in the certificate.)

SARM 32PHOSPHATE ROCK(PHALABORWA)

The material was produced and supplied by SAMANCOR Ltd., of Meyerton, Gauteng. It is a milled ferrosilicon metal powder, manufactured for use in heavy-media separation appli-cations.

This reference material can be used as a referee standard by both the producers and buyers of this material. It can also be used for the development of new analytical tech-niques for this type of material, and for the calibration of instruments.

The certified and uncertified values assigned for the elements are listed below. These values are based on the analytical results received from 20 laboratories. (These laborato-ries are listed in the Certificate of Analysis.)

SARM 33FERROSILICON (c 15 % Si)

18

The material was supplied by Rand London Ltd., Weedon Minerals and Cullinan Minerals.

This reference material can be used for the calibration of instruments and as a control for analyses of similar materials as well as in the development of new analytical techniques.

The certified and uncertified values for this reference material, which are based on a statistical evaluation of the results submitted by 17 laboratories, are given below. (A com-plete list of participating laboratories is given in the certificate.)

SARM 34ANDALUSITE

The vanadium pentoxide sample was obtained from Highveld Steel and Vanadium Corp. Ltd., Transvaal Alloys and Vametco, and was homogenized prior to bottling. Besides being useful as a vanadium pentoxide reference material, it can also be used for the calibration of instruments and as a control for the development of analytical techniques.

Certified values for this reference material, which are based on a statistical evaluation of the results from 14 laboratories, are listed below. (A complete list of the participating labo-ratories is given in the certificate.)

SARM 38VANADIUM PENTOXIDE

19

The Certified Value is an estimate of the "consensus" value based upon the best available data at the time of the certification. Normal distribution is assumed and the arithmetic mean and inter laboratory standard deviation is assigned.If normality of the distribution cannot be assumed or there is insufficient data, the median and standard deviation is used.The precision of the user's proposed analytical method must be taken into account when using this reference material.The Standard deviation shown is the inter-laboratory Standard deviation. Ideally a repeat analysis by a laboratory should fall in a range of 2.3 times the standard deviation from the accepted value.

Element Unit Average Lab S N Al2O3 % 14.6 0.1560 12 Cr2O3 % 41.83 0.423 14 Fe2O3 % 30.7 0.43 11 MgO % 9.15 0.276 13 MnO % 0.243 0.016 11 SiO2 % 3.13 0.106 12 TiO2 % 0.944 0.024 12 V2O5 % 0.414 0.0030 6 CaO % 0.24 0.0450 13

SARM 131ChromeOre

TABLE 7 – CERTIFIED VALUES OF THE MAJOR CONSTITUENTS

20

SARM 131CHROME ORE

The Certified Value is an estimate of the "consensus" value based upon the best available data at the time of the certification. Normal distribution is assumed and the arithmetic mean and inter laboratory standard deviation is assigned.If normality of the distribution cannot be assumed or there is insufficient data, the median and standard deviation is used.The precision of the user's proposed analytical method must be taken into account when using this reference material.The Standard deviation shown is the inter-laboratory Standard deviation. Ideally a repeat analysis by a laboratory should fall in a range of 2.3 times the standard deviation from the accepted value.

Element Unit Average Lab S N

Fe % 62.2 0.208 12 SiO2 % 7.82 0.173 12 Al2O3 % 1.84 0.0710 12

P % 0.054 0.0029 11 K2O % 0.219 0.0072 11 CaO % 0.086 0.0174 10 MnO % 0.02 0.0053 11 Na2O % 0.031 0.0128 6 TiO2 % 0.094 0.0091 9

SARM 132HEMATITE Ore

TABLE 8 – CERTIFIED VALUES OF THE MAJOR CONSTITUENTS

21

SARM 132HEMATITE ORE

Al

0.41

0.40

0.42

Ca 0.78 0.76 0.79 Fe 66.63 66.59 66.67 Mg 1.69 1.66 1.76 Mn 0.17 0.167 0.172 Si 0.16 0.155 0.167 Ti 0.43 0.427 0.443

mg/kg

As

2*

-

-

Co 223 214 232 Cd 5* - - Cr 21 19 23 Cu 502 494 509 K 108 100 116 Na 91 79 102 Ni 281 273 290 P 477 467 487 Pb 25 22 27 S 695 684 707 V 520 504 537 Zn 142 133 151

REFERENCESTOCH, H. Preparation and certification of a reference sample of magnetite ore. Report No. 1978-1978 of the National Institute for Metallurgy.

TABLE 9 – CERTIFIED VALUES OF THE MAJOR AND MINOR CONSTITUENT

Element SARM 12, %

95 % Confidence Limits

Low High

22

TABLE 10 – CERTIFIED VALUES OF THE MAJOR AND MINOR CONSTITUENTS

Element

SARM 13, %


Low

High

ZrO2

64.01

63.90

64.14

HfO2 1.29 1.08 1.37 SiO2 32.45 32.36 32.56 TiO2 0.295 0.277 0.305 Al2O3 0.61 0.58 0.67 Fe as Fe2O3 0.187 0.183 0.194 P2O5 0.23 0.21 0.24 CaO 0.14* - -

mg/kg

MgO

440*

-

-

Cr 23* - - U 328* - - Th 300* - -

*Uncertified values.

Element SARM 13, %


Low High

REFERENCERING, EJ et al.: The preparation of a reference material of South African zirconium concentrate (Richard's Bay). Report No. 2127 of the National Institute for Metallurgy.

23


Element

SARM 14, %


Low

High

CaF2

97.32

97.18

97.86

CaCO3. 0.3* - - MgCO3 0.03* - - SiO2 0.57* - - Fe as Fe2O3 0.06* - - P2O5 0.18* - -


REFERENCERING, EJ et al.: The preparation of two reference materials of South African fluorspar. MINTEK Report M2, 1981

Element SARM 14, %


Low High

24

REFERENCERING, EJ et al.: The preparation of two reference materials of South African fluorspar. MINTEK Report M2, 1981.


Element

SARM 14, %


Low

High

CaF2

97.32

97.18

97.86

CaCO3. 0.3* - - MgCO3 0.03* - - SiO2 0.57* - - Fe as Fe2O3 0.06* - - P2O5 0.18* - -


Element SARM 14, %


Low High

25


Constituent

SARM 16, %


Low

High

Mn (total)

49.17

48.80

49.23

Fe 11.48 11.42 11.54 SiO2 5.04 4.89 5.08 CaO 4.70 4.66 5.08 MgO 0.76 0.67 0.77 P 0.033 0.031 0.035 K2O 0.02 0.01 0.02 BaO 0.60 0.59 0.68 S 0.17 0.16 0.19 Al2O3 0.3* - - Na2O 0.03* - - CO2 1.3* - - MnO2 31.6* - -

mg/kg Zn

364

336

370


REFERENCEHANSEN, RG et al.: The preparation and certification of two reference materials of South African manganese ores. MINTEK Report No. M70, 1983.

Constituent SARM 16, %


Low High

26

REFERENCEHANSEN, RG et al.: The preparation and certification of two reference materials of South African manganese ores. MINTEK Report No. M70, 1983.


SARM 17, %


Low

High

Mn (total)

38.81

38.70

38.88

Fe 4.27 4.24 4.29 SiO2 4.69 4.62 4.77 MgO 3.03 2.99 3.09 Al2O3 0.24 0.20 0.28 P 0.018 0.017 0.023 Na2O 0.09 0.08 0.13 K2O 0.09 0.08 0.12 CO2 15.40 15.23 15.70 CaO 14.4* - - BaO 0.08* - - S 0.01* - - MnO2 28.2* - -

mg/kg

Zn

43

42

55




Low High

27

REFERENCEHANSEN, RG. The preparation and certification of a South African phosphate rock concentrate for use as a reference material. MINTEK Report No. M190, 1985.


Constituent

SARM 32, %


Low

High

P2O5

39.96

39.71

40.23

CaO 54.44 54.16 54.65 F 2.49 2.18 2.63 CO2 1.61 1.51 1.74 MgO 0.50 0.49 0.52 SrO 0.52 0.49 0.55 Fe2O3 0.14 0.13 0.16 SiO2 0.4* - - Al2O3 0.05* - -

mg/kg

Cl

640*

-

-




Low High

28

REFERENCEHANSEN, RG. The preparation and certification of a low-silicon ferrosilicon metal powder, for use as a reference material. MINTEK Report No. M255, 1986.


Constituent

SARM 33, %


Low

High

Si

15.60

15.47

15.74

C 1.01 0.99 1.03 Al 0.62 0.57 0.66 Mn 0.75 0.71 0.79 Cr 0.43 0.39 0.49 Ni 0.28 0.26 0.30 Cu 0.29 0.28 0.30 P 0.043 0.040 0.046 Total iron as Fe 80.2 80.0 80.4

mg/kg S

80*

-

-




Low High

29

REFERENCERING, EJ. The preparation and certification of a sample of South African vanadium pentoxide. MINTEK Report No. M408-1990.


Constituent

SARM 38, %


Low

High

Al2O3

0.14

0.04

0.24

Fe2O3. 0.119 0.067 0.161 Na2O 0.22 0.17 0.27 SiO2 0.11 0.06 0.16 V 55.84 55.67 56.01

mg/kg

K2O

600

257

943

MgO 37 27 47 As 10* - - CaO 190* - - P2O5 80* - - S 45* - -




Low High

30

C O A LRE F E R E N C E M A T E R I A L S

[04]

The coal was obtained from the Witbank area of Mpumalanga. The rank of this coal falls within the vitrinite Category V7 and is a high volatile low rank bituminous coal.

This material will be useful as a reference material by buyers and sellers in contracts, to assess possible air and ground pollution and as a control in the analysis of similar materi-als.

The certified and uncertified values for this reference material, which are based on a statistical evaluation of the results submitted by 28 laboratories, are given below. (A com-plete list of the participating laboratories is given in the certificate.)

SARM 18 COAL(WITBANK)

The coal was obtained from the coal fields of Free State. The rank of this coal is low and is subbituminous to bituminous in range and falls within the vitrinite Category V3 - V6 aver-aging V4.



SARM 19COAL (OFS)

The coal was obtained from the Sasolburg area of Free State. The rank of this coal is low falling in the subbituminous to bituminous range and falls within the vitrinite Category V3 - V6 averaging V4.



SARM 20COAL(SASOLBURG)

32

REFERENCERING, EJ et al.: The preparation of 3 reference materials of South African coal. MINTEK Report No. M169, 1984.

Constituent

SARM 18, %


Low

High

SiO2

6.20

6.16

6.25

Al2O3 2.57 2.54 2.61 Fe2O3 0.29 0.28 0.29 TiO2 0.114 0.111 0.116 CaO 0.18 0.17 0.19 MgO 0.11 0.10 0.11 K2O 0.145 0.140 0.150 S 0.56 0.53 0.62 L.O.I. 90.11 89.87 90.18

mg/kg Ba

78

71

82

Be 4.1 3.9 4.5 Ce 22 21 24 Co 6.7 5.5 7.2 Cr 16 14 18 Cu 5.9 5.2 6.4 Hf 1.7 1.7 1.9 La 10 9 13 Mn 22 21 23 Ni 10.8 10.1 11.5 P 30 26 36 Rb 8.1 6.7 9.5 Sc 4.3 4.0 4.7 Sm 2.0 1.9 2.2 Sr 44 42 45 Th 3.4 3.0 4.3 U 1.5 1.5 2.0 V 23 21 25 Zn 5.5 5.2 6.8 Zr 67 62 71 B

30*

-

-

Br 3* - - Cs 1* - - Eu 0.3* - - Ga 8* - - Ge 8* - - Hg 0.04* - - Li 11* - - Mo 1* - - Na 130* - - Nb 6* - - Pb 5* - - Sb 0.3* - - Sn 1* - - Ta 0.3* - - Tb 0.3* - - W 2* - - Y 12* - -



33

Constituent

SARM 19, %


Low

High

SiO2

15.00

14.88

15.14

Al2O3 8.01 7.86 8.15 Fe2O3 1.75 1.73 1.76 TiO2 0.341 0.324 0.356 CaO 1.39 1.37 1.41 MgO 0.20 0.20 0.22 Na2O 0.29 0.28 0.31 K2O 0.24 0.24 0.25 S 1.49 1.42 1.55 L.O.I. 71.28 71.11 71.55

mg/kg As

7

6

8

Ba 304 295 318 Be 2.8 2.3 3.1 Ce 56 51 59 Co 5.6 5.0 6.6 Cr 50 47 58 Cs 1.4 1.3 2.0 Cu 13 11 14 Ga 14 13 15 Ge 13 10 14 Hf 5.4 4.7 6.1 La 27 26 29 Mn 157 143 168 Ni 16 13 20 P 130 108 135 Pb 20 17 23 Rb 9 8 10 Sc 7.6 7.0 8.3 Sm 4.9 4.2 5.0 Sr 126 125 141 Th 12 11 14 U 5 3 6 V 35 33 37 Zn 12 12 16 Zr 351 336 361 B

90*

-

-

Br 2* - - Cl 32* - - Eu 0.7* - - Hg 0.2* - - Li 37* - - Mo 2* - - Nb 10* - - Sb 0.3* - - Se 1* - - Sn 3* - - Ta 0.8* - - Tb 0.7* - - W 2* - - Y 20* - - Yb 2* - -




34

Constituent

SARM 20, %


Low

High

SiO2

17.66

17.48

18.06

Al2O3 11.27 11.16 11.73 Fe2O3 1.17 1.15 1.19 TiO2 0.63 0.61 0.65 CaO 1.87 1.85 1.89 MgO 0.43 0.41 0.45 Na2O 0.27 0.26 0.28 K2O 0.14 0.14 0.15 P2O5 0.14 0.13 0.14 S 0.51 0.48 0.53 L.O.I. 64.66 64.04 65.06

mg/kg As

4.7

4.6

6.0

Ba 372 363 384 Be 2.5 2.1 3.0 Ce 87 73 88 Co 8.3 7.6 9.0 Cu 18 15 19 Ga 16 15 18 Hf 4.8 4.1 5.1 Hg 0.25 0.18 0.27 La 43 40 57 Mn 80 77 82 Ni 25 23 26 Pb 26 20 29 Rb 10 9 14 Sc 10 10 12 Se 0.8 0.7 1.0 Sm 6.3 5.9 6.6 Sr 330 318 338 Ta 1.2 1.1 1.6 Th 18 16 20 U 4 3 5 V 47 45 50 Y 29 23 30 Zn 17 14 18 B

90*

-

-

Br 2* - - Cr 67* - - Cs 2* - - Eu 1* - - Li 90* - - Nb 16* - - Sb 0.4* - - Sn 4* - - Tb 0.9* - - W 3* - - Yb 2* - - Zr 180*




35

REFERENCES1) Hansen, RG; Ring, EJ and Steele, TW. The preparation and certification of ten uranium reference materials. Randburg, MINTEK, Report M16, 1982.2) Hansen, RG and Ring, EJ. The preparation and certification of a uranium reference material. Randburg. MINTEK Report M84.

Eleven uranium bearing materials of South African origin (UREM 1-11) have been certified for total uranium content. The materials have been analysed by laboratories throughout the world, with the exception of SARM 31(UREM 11), which has been analysed only by South African laboratories. A brief description of each material follows, and the certified values, with their confidence limits, are given in a table.

U R A N I U MRE F E R E N C E M A T E R I A L S

[05]

This material is a concentrate of iron pyrite from the Vaal Reefs Gold Mine, North-West, the main components being pyrite, pyrophyllite and quartz. Small amounts of chlorite and mica are present, and uranium is present as in SARM 21.

SARM 23UREM 3. PYRITE CON-CENTRATE1

The material was obtained from Harmony Gold Mine, Free State, and is a residue from acid leaching of uranium-bearing ore. The main constituent is quartz, and sericite, pyro-phyllite, chlorite are minor components. Uranium is present as uraninite. Brannerite, though present in the original ore, could not be identified in this material.

SARM 21UREM 1. ACID LEACH RESIDUE1

The material is a tailings sample from Doornfontein Gold Mine, Gauteng. It consists mostly of quartz, with pyrophyllite and sericite as minor components. Uranium is present as in SARM 21.

SARM 24UREM 4. SLIMES DAM MATERIAL1

This material is an iron pyrite concentrate from Hartebeestfontein Gold Mine, North-West. Its mineralogical composition is the same as SARM 23.

This material is an acid leach residue from the uranium plant at Hartebeestfontein Gold Mine, North-West. Quartz is the main constituent, with hematite, sericite and pyrophyllite present in minor amounts. Uranium is present as in SARM 21.

SARM 26UREM 6. PYRITE CONCENTRATE1

SARM 27UREM 7. ACID LEACHRESIDUE1

The material is a roasted iron pyrite from the sulphuric acid plant at Durban Roodepoort Deep Gold Mine. It consists mainly of quartz and hematite. Uranium is present as in SARM 21.

SARM 28UREM 8. ACID PLANTCALCINE1

The material is a conglomerate supplied by West Rand Consolidated Mines, consisting mainly of quartz, pyrophyllite and muscovite, with pyrite and chlorite in minor amounts. The main uranium bearing mineral is uraninite. An investigation into the state of radio-ac-tive equilibrium of this material has established that it is suitable for use for calibration of radiometric sorting equipment, as well as for chemical analysis.

SARM 31UREM 11. HEAD SAMPLE (low grade)

TABLE 21 - SARM 21 - 31 UREM REFERENCE MATERIALS CERTIFIED VALUES AND THEIR 95% CONFIDENCE LIMITS

U3O8, mg/kg

95 % Confidence limits

Low High SARM 21

UREM 1

34.4

33.8

35.0

SARM 23 UREM 3

439

430

447

SARM 24 UREM 4

100.8

100.0

101.0

SARM 26 UREM 6

1 887

1 867

1 925

SARM 27 UREM 7

51.2

50.0

53.8

SARM 28 UREM 8

130

125

133

SARM 31 UREM 11

69.5

68.5

70.6

37

REFERENCEHANSEN, R G. The preparation and certification of three gold-bearing reference materials. MINTEK Report No. M411, May 1995.

[06]

One reference material (SARM 56) of gold-bearing processed material is available. It can be used for the verifi-cation of routine test results, the development of new analytical techniques, the calibration of instruments, and the preparation of secondary reference materials.

The certified and uncertified value for this reference material is based on a statistical evaluation of the results submitted by 32 laboratories. A complete list of the participating laboratories is given in the certificate of the reference material.

G O L D - B E A R I N GM A T E R I A L S

The gold calcine gold-bearing material was supplied by Hartebeesfontein Gold Mining Company Ltd. It consists of abundant porous hematite and magnetite particles. Sulphide and hydrous iron oxide particles occur sporadically.

SARM 56GOLD CALCINE

SARM 56 Au mg/kg

Ag mg/kg

2.69

1.7*

2.63 2.75


* Uncertified value

SARM Element Certified ValueLow High

TABLE 22 - CERTIFIED VALUE AND THEIR 95 % CONFIDENCE LIMIT

39

REFERENCEHANSEN, R G. The preparation and certification of six reference materials for the heavy minerals industry. Randburg, MINTEK Report M412, 1997.

[06]H E A V Y M I N E R A L S

P R O C E S S E D M A T E R I A L SA certified and uncertified value for SARM 62 and SARM 57 is based on results from +/- eighteen laboratories. A complete list of the participating laboratories is given in the certificate of the material.

These reference materials can be used as a referee standard by both the producers and buyers of this type of material. It can also be used for the verification of routine test results, the development of new analytical meth-ods, and the calibration of instruments.

The material is a titanium slag, the main mineral phase being armalcolite (FeMgTi4O10), with minor amounts (5-20 %) of anatase and pseudobrookite. Rutile and kennedyite are present in trace amounts.

SARM 57TITANIUM SLAG (RBM)

The material is a zircon concentrate. X-Ray diffraction analysis of the material showed the main mineral phase present to be zircon (ZrSiO4). SARM 62

ZIRCON (RBM)

41

Information values for each of the following constituents are given on the Certificate of Analysis:

Constituent

SARM 57,

%


Low

High

Total Ti as TiO2 85.4 85.1 85.7

Ti2O3

27.1*

Total Fe as Fe2O3 11.8 11.5 12.0 Al2O3 1.23 1.17 1.34 Cr2O3 0.16 0.14 0.16 SiO2 1.72 1.56 1.97 V2O5 0.39 0.37 0.44 CaO 0.16 0.14 0.18 MgO 0.98 0.89 1.05 MnO 1.76 1.68 1.86

Gain on ignition 3.92*

* Uncertified valueCr and Loss on Ignition

TABLE 23 - CERTIFIED VALUES AND THEIR 95 % CONFIDENCE LIMIT

42

Information values for each of the following constituents are given on the Certificate of Analysis:

Constituent

SARM 62,

%


Low

High

ZrO2 64.2 63.8 65.4 SiO2 32.8 32.5 33.2 HfO2 1.31 1.01 1.36 Total Ti as TiO2 0.13 0.12 0.14 Al2O3 0.88 0.62 1.06 Total Fe as Fe2O3 0.07 0.06 0.07 P2O5 0.12 0.11 0.13 CaO 0.11* MgO 0.04*

mg/kg U3O8 354 324 382 ThO2 158 141 169

* Uncertified valueCr and Loss on Ignition

TABLE 24 - CERTIFIED VALUE AND THEIR 95 % CONFIDENCE LIMIT

43

These reference materials are sulphide ores in varying ranges of sulphur

S U L P H U R[08]

They can be used as control samples in the analysis of samples of a similar type, verification of analytical methods for the analysis of S in ore and as a reference material for the calibration of equipment used for analysing similar materials.

Reference Element Unit Average Lab S 95% Confidence N SARM 114 Stotal % 0.117 0.0041 0.113 - 0.120 8

SARM 115 Stotal % 0.195 0.01 0.187 - 0.204 9

SARM 116 Stotal % 14.4 0.828 13.7 - 15.0 9

SARM 117 Stotal % 2.5 0.124 2.40 - 2.59 9

SARM 118 Stotal % 27.2 0.86 26.5 - 27.9 8

TABLE 25 - SARM 114 to 118 CERTIFIED VALUES AND 95% CONFIDENCE LIMITS

SARM 114 to 118 Sulphite ores

45

PURCHASING PROCEDURE

Purchase orders for the certified reference materials should be addressed to:

MintekAnalytical Services DivisionPrivate Bag X3015Randburg, 2125Republic of South Africa

Prices are subject to revision, but customers will be notified of such changes before an order is executed.

PAYMENTS CAN BE MADE TO:

MINTEK

ABSA BANKSTRIJDOM PARK BRANCHP.O Box 997NORTHRIDING, 2162

ACCOUNT NUMBER: 01-00004-150-1ACCOUNT HOLDER: MINTEKBRANCH CODE: 51-50-05-90SWIFT CODE: ABSA ZAJJ

All shipments will be by air parcel post for the customer's account.

NIM and MINTEK reports can be obtained from:

The Publications DepartmentMINTEKPrivate Bag X3015RANDBURG2125Republic of South Africa

Tel.: (Int.) +27 11 709-4111 x4266Fax: (Int.) +27 11 709-4326

Tel.: (Int.) + 27 11 709-4004Fax: (Int.) + 27 11 709-4006Email: [email protected]

ANALYTICAL SERVICES DIVISION

200 Malibongwe Drive Randburg

2125 South Africa

Phone: +27 11 709 4046

E-mail: [email protected]

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