analytical services division - mintek
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Analytical Services Division
SCHEDULE OF SERVICES
200 Malibongwe Drive Randburg
2125 South Africa
Phone: +27 11 709 4046Fax: +27 11 793 2413
E-mail: asdenquiries@mintek.co.za
ACCREDITED METHODS
Fire Assay (Gravimetric Au, totPGM +Au, 3E, 4E, 6E) | Combustion (Total C, Total S) | ICP-OES (FeCr ores & Slags)AAS (Na & K in ores) | XRF (U in ores, Fe ore)
Testing Laboratory
ABOUT MINTEK
Mintek is an autonomous research and development (R&D) organisation specialising in all aspects of mineral processing,
extractive metallurgy and related technology. Working closely with minerals and metal producers locally and internationally,
Mintek develops and transfers innovative, new and improved technology to industry for processing, extracting, refining
and utilising minerals and mineral products.
Mintek offers R&D expertise, service testwork, and technologies for the gold, platinum-group metals (PGM), base metals,
ferro-alloys, and industrial minerals sectors. Extensive laboratory and pilot-plant facilities are available for investigations
in the following fields:
• Analysis - characterisation of ores and other materials, analytical chemistry and mineralogical techniques;
• Mineral processing - comminution, flotation, gravity, electrostatic, magnetic, and dense-media separation;
• Hydrometallurgy - leaching, bacterial oxidation, adsorption (CIP and RIP), solvent extraction, and electrowinning;
• Pyrometallurgy – pre-heating and pre-reduction, submerged-arc and DC transferred-arc smelting, converting,
condensing, and process simulation; and,
• Other specialised technologies - metallurgical process control and optimisation, tank and heap bio-leaching of
gold and base metals, alloy development, pollution studies, residue processing, and techno-economic studies.
Mintek’s activities range from initial investigations to complete process development and, in conjunction with engineering
partners, the design, construction, and commissioning of plants.
MINTEK’S ANALYTICAL SERVICES DIVISION
Mintek’s Analytical Services Division (ASD) is a well-established analytical chemistry laboratory that specialises
in geochemical and general analytical chemistry. We provide analytical support to clients in the mineral,
metallurgical and related industries, using state-of-the-art instrumentation for a variety of techniques.
Our highly skilled scientists and analysts are backed-up by a top-quality consulting team, all operating
according to ISO standards. We have a wide range of facilities that ensures a quality one-stop for exploration
and general analytical services.
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TYPE DESCRIPTION SARM NUMBER UNIT OF PACKING
Prec
ious
met
als
PGM ore Merensky SARM 73 3 kg
PGM ore Sheba’s Ridge SARM 75 3 kg
PGM ore Merensky SARM 76 3 kg
Coal
Coal (Witbank) SARM 18 120 g
Coal (OFS) SARM 19 120 g
Coal (Sasolburg) SARM 20 120 g
Uran
ium
Uranium, acid leach residue SARM 21 UREM 1 200 g
Uranium, pyrite concentrate SARM 23 UREM 3 200 g
Uranium, slimes dam material SARM 24 UREM 4 200 g
Uranium, pyrite concentrate SARM 25 UREM 5 200 g
Uranium, pyrite concentrate SARM 26 UREM 6 200 g
Uranium, acid leach residue SARM 27 UREM 7 200 g
Uranium, Witwatersrand ore SARM 29 UREM 9 200 g
Ores
and
sem
i-pr
oces
sed
mat
eria
ls Phosphate rock SARM 32 100 g
Andalusite SARM 34 100 g
Vanadium pentoxide SARM 38 100 g
Fluorspar (Zeerust) SARM 15 100 g
Manganese ore (Wessels) SARM 16 100 g
Manganese ore (Mamatwan) SARM 17 100 g
Pot shard (archaeological ceramic) SARM 69 100 g
3
CONTENTS
QualiTy aSSuraNCE 2
SaMPlE SuBMiSSiON, STOraGE, aND DiSPOSal 3
SaMPlE PrEParaTiON 4
PrECiOuS METalS aNalySiS 4
MulTi-ElEMENT TECHNiQuES 5
Geological and Metallurgical Materials 5ICP-OES 5ICP-MS 6
SiNGlE ElEMENT TECHNiQuES 6
AAS 7
WaVElENGTH-DiSPErSiVE XrF 8
MiSCEllaNEOuS METHODS 9Sulphurandcarbon 9
Gases 9
Wateranalysis 9
Environmentalanalyses 10
Coalandgraphite 10
Halides 10
Otheranalytes 10
SarM PrOGraM 11
ContactDetails(back cover page)
4
ALaboratoryInformationManagementSystem(LIMS)isusedtotrackthestatusofsamplesfromreceptionthougheverystageoftheanalyticalprocess.Instrumentsareinterfacedtothesystemtoensureaccuratedatatransferandarchivingofresultsforquickretrieval.Qualitycontrolsandlimitsareincorporatedtohighlightresultsthatneedinvestigating.
ASDhasfiveanalyticaltechniquesonitsscheduleofaccreditation:
• Fire Assay(GravimetricAu,totPGM+Au,3E,4E,6E)
• Combustion(TotalC,TotalS)
• ICP-OES(FeCrores&Slags)
• AAS (Na&Kinores)
• XRF (Uinores,Feore)
MintekholdscertificationsforQuality(ISO9001andISO17025),Environment(ISO14001),aswellasSafetyandHealth(OHSAS18001).TheorganisationisregisteredasauraniumtestworkfacilitywiththeNationalNuclearRegulator(NNR)and
theDepartmentofMineralsandEnergy(DME).
QualiTy aSSuraNCE
ASD has been accredited to ISO 17025 (Testing and Calibration Laboratories) since 1995.
Regular internal and external audits are held to maintain and improve theeffectivenessoftheQualityManagementSystem,andthelaboratoryparticipatesregularlyinlocalandinternationalproficiencytestingprogrammes.
5
SaMPlE SuBMiSSiON, STOraGE, aND DiSPOSal
• Solutionsandsolidsmustbepackagedseparatelytoavoidcontaminationandleakage;
• Itisthesubmitter’sresponsibilitytosubmitasufficientamountofsampleforanalysis.Ifinsufficientsampleissubmitted,
theanalysisrequestmustbeprioritisedtominimisedelays;
• Thesubmittermustensurethatthesamplesareinaformsuitableforchemicalanalysis.Solidsamplesmustbe
submittedpulverised,homogenised,anddry.PreparationwillbeundertakenatMintekonlywithpriorconsultationwith
theclient.Solutionsmustbefreeofallsolids,orentrainedorganics;
• Solutionsamplesmustbesubmittedinliquid-tightcontainers,preferablyinatranslucentpolyethylenecontainerwitha
screwcap.Solidsamplesshouldbesubmittedinplasticorglassvials,orbagsthatarespill-proof;and,
• Clientsmustensurethatsamplesarecorrectlylabelled.Labelsmustbefirmlyfixedtothecontainerandmarkedwith
permanentink.
Thefollowingdetailsmustaccompanyallsamples:
• Completedsamplesubmittalform;
• Client’spurchaseordernumber;
• Quotationnumber;and
• Anyotherinformationpertainingtothesamplesthatmaybeuseful.
Sample storage and disposal
Unlessexpresslyagreedotherwise,clientsshall,uponconclusionoftheproject,beresponsibleforcollectionand/ordisposal
ofanyunusedsamplematerialsandproductsfromthetestworkfromMintek.Shouldtheclientfailtodosoafternoticeto
thiseffectfromMintek,Mintekmayatitssolediscretionreturnordisposeofanyunusedsamplematerialsandtestwork
productsattheclient’sriskandexpense.
6
SaMPlE PrEParaTiONGoodsamplepreparationpracticeisessentialforobtainingmeaningfulandreliabledata.Thisinvolvestechnologicallyadvancedequipment to process different sample types. ASD’s sample preparation section is a specialised and centralised samplepreparationformetallurgicalandgeologicalsamples.
Toensurethatyoursamplesarepreparedcorrectlywerecommendthatyoudiscussyourrequirementswithourconsultant
forthebestpossibleoptionforyoursampletypebeforestartinganyanalysis.
PrECiOuS METalS aNalySiSThisclassical fireassay technique is still preferred forpreciousmetalsanalysis,as it allowshigh-precisionanalysisof lowconcentrationsofpreciouselementsinavarietyofsampletypes.Excellentfacilitiesareavailableforleadcollection(mainlyforAu,Pt,Pd,andRh,eitherasindividualelementsorasagravimetricfinish),andfornickelsulphidecollection(Au,Pt,Pd,Rh,Ru,IrandOs).Agravimetricfinishisgenerallyused,butanalysisforindividualpreciousmetalsrequiresanICP-OESorICP-MSfinish,asperclientpreference.
SAMPLE PREPARATION GUIDELINES
SamplePreparation Crushing,pulverisingofgeochemicalsamples 15gmin.1.5kgmax.
Particlesizeanalysis SympatechSaturnDigisizer 100gmax.
SG/RD Specificgravity/relativedensity 100gmax
No. Description Analyte list Mass/vol
Determination limit
FA1Standardfireassaywithhigh-temperaturecupellationfollowedbygravimetricfinish
TotalPGM+Au
Dependsonsamplegrade
0.28g/t
FA2Standardfireassaywithnohigh-temperaturecupellation,followedbythedissolutionofthesilverprillinaqua-regiaandanalysisusingICP-OES
Pt,Pd,Au(3E) 0.1ppm
FA3Standardfireassaywithnohigh-temperaturecupellation,followedbypressuredissolutionoftheprillsusingsealedglasstubesandanalysisusingICP-OES
Pt,Pd,Rh,Au(4E) 0.1ppm
FA4Standardfireassaywithnickelsulphidecollector,followedbycrushing,leachinganddissolutionofthenickelsulphidebuttoninaqua-regiaandanalysisusingICP-OES
Pt,Pd,Rh,Au,Ru,Ir(6E) 0.1ppm
FA5Standardfireassaywithlow-temperaturecupellationofthesilverprill,partingandannealing,followedbygravimetricfinish TotalAu 0.08g/t
7
MulTi-ElEMENT TECHNiQuES - Geological and MetallurgicalMaterialsICP-OESICP-OpticalEmissionSpectrometry(ICP-OES)isamulti-elementanalyticaltechniquethatcananalysemorethan10elementssimultaneously.ICP-OESinstrumentshavealongdynamicrange,meaningthattheycanbeusedtoanalysehighconcentrationswithouttheneedforfurtherintermediatedilutions.
ThissectionhasfiveICP-OESinstruments,includingthreeofthelatestmodels,whicharefullyautomatedforimprovedturnaroundtime.
No. Description Analyte listMinimum mass/vol.
Determination limit
ICP1OresandSlags.FusionfollowedbyaciddissolutioninHCl/HNO3
Mg,Al,Si,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Pb
1g 0.05%
ICP2BeachsandsandTi-bearingminerals,FusioninPt/Aucruciblesfollowedbyaciddissolution
Mg,Al,Si,Ca,Ti,V,Cr,Mn,Fe,Zr
1g Dependsonmatrixandanalyte
ICP3Impuritiesinhigh-puritymetalseg.impuritiesinpigiron
Per5elements,eg.Ca,Ti,V,Cr,Mn.
1g Dependsonmatrixandanalyte
ICP4Ferrochromiummetal.Aciddigestion
Mg,Al,Si,Ca,Ti,V,Cr,Mn,Fe,Co,Ni
1g
Mg,Al,Ca 0.05%
Ti,V,Mn,Co,Ni 0.01%
Si 0.2%
Cr 1%
Fe 0.5%
ICP5 Resinsoractivatedcarbon.AciddigestionNa,Mg,Al,Si,Ca,Fe,Co,Ni,
Cu,Zn,Ag,Au,Pb2g
50ppmexceptforSi(100ppm)
ICP6Andalusite.Fusionfollowedbyaciddissolution
Al2O3,Fe2O3,SiO2. 1g
Al2O3 15%
SiO2 0.5%
Fe2O3 0.1%
ICP7 Ferrosiliconmetal.AciddigestionMg,Al,Ca,Ti,V,Cr,Mn,Fe,Co,
Ni,Cu,Zn,Mo,Pb1g 20ppm
ICP8PGMconcentratesandmattesamples,Fusionfollowedbyaciddissolution
Si,Cr,Fe,Cu,Ru,Rh,Pd,Ag,Zr,Pt,Au,Ni,Co
1g
Si,Cr,Fe,Cu,Rh,Ag 0.05%
Ru 0.06%
PtandPd 0.2%
Au 0.5%
Zr 0.1%
ICP9Tinandtungstenores.Fusionfollowedbyaciddissolution
Mg,Al,Si,Ca,Mn,Fe,Zn,Sn,W 1g
Mg,Ca,Fe,Mn,Zn 0.05%
Sn 0.02%
W 0.05%
Al 0.07%
Si 0.05%
ICP10Tantalitesamples.Fusionfollowedbyaciddissolution.
Sn,Nb,Ta,W 1g
Si,Fe,Ca,Mn,Sn,Ti0.05%
Ta,W 0.5%
Al 0.1%
Nb 0.2%
ICP 15 Cr2O3 1g 0.70%
ICP16 Aciddigestion Co,Ni,Fe,Cu 1g <10ppm
8
ICP-MSICP-MassSpectrometery(ICP-MS)isatracetechniquethatanalysesinthelowparts-per-billion(ppb)range.ICP-MSisespeciallysuitedforenvironmentalandwateranalyses,impuritiesinhigh-purityend-productsoftwo-tofive-ninesquality,andsoilsororesfortraceandultra-traceelements.
Verylowdetectionlimitsof0.01ppminsolutionsand0.1ppminsolidscanbeattained.Quicksemi-quantitativescanscanbobtainedforsolidandsolutionsamplescontainingtracelevelsofdissolvedsolids.ThesectionhasoneICP-MSinstruments.
No. Description Analyte listMinimum mass/vol.
Determination limit
ICP19 Oresandslags.Fusionfollowedbyaciddissolution
MgO,Al2O3,SiO2,CaO,TiO2,Cr2O3,MnO,FeO
1g
MgO 0.1%
Al2O3,SiO2,Cr2O3 0.2%
CaO 0.3%
TiO2 0.04%
MnO 0.03%
FeO 0.06%
ICP21 Determinationoflow-concentrationbasemetalsinsolidsbyaciddigestion
Mg,Cr,Si,Fe,Ca,Ti,Mn,Cu,V,Ni,Co,Al
2g 0.1ppm
ICP11 WatersamplesafterrequireddilutionMg,Al,Si,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Pb,Li,Be,Na,
K,Ag,Cd,Sn5ml
Ti,V,Cr,Mn,Fe,Cu,Li
0.02ppm
Co,Zn,Ag,Cd,Be 0.05ppm
Mg,Si,Ni,Pb,Sn 0.1ppm
Al,Ca 0.2ppm
Na,K 0.5ppm
ICP12 PGMsolutionsafterrequireddilutionMg,Al,Cr,Mn,Fe,Co,Ni,Cu,Pb,Ru,Rh,Pd,Os,Ir,Pt,Au
5ml
2ppmexceptfor
Ru 6ppm
Rh 4ppm
ICP13 Multi-elementsolutionsafterrequireddilution
Mg,Al,Si,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Pb,Mo,SO4,As
5ml2ppmexceptfor
SO4 15ppm
ICP22 Low-concentrationbasemetalsinwatersamples
Mg,Cr,Si,Fe,Ca,Ti,Mn,Cu,V,Ni,Co,Al,Zn,Pb,Li,Be,Ag,
Cd,Sn10ml 0.02ppm
ICP23 Low-concentrationPGMsinsolutions Au,Pt,Pd,Rh,Ru,Ir,Os 10ml 0.1ppm
ICP24 Low-concentrationbasemetalsinsolutions
Mg,Cr,Si,Fe,Ca,Ti,Mn,Cu,V,Ni,Co,Al,Zn,Pb,Li,Be,Na,K,
Ag,Cd,Mo,SO4,As10ml 0.02ppm
No. Description Analyte list Determination limit
MS2 FusionAllelements,excludingNa,C,S,P,Si,K,Caandgases.Radioactivematerial-onlyUandTh
0.1ppm
MS3 Semi-quantitativescanAllelements,excludingNa,C,S,P,Si,K,Caandgases.Radioactivematerial-onlyUandTh
0.1ppm
MS4 Specialdissolutions BorHgorOs 0.1ppm
MS5 Filteranalysis AsforMS2,excludingvolatiles 0.1ppm
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SiNGlE ElEMENT TECHNiQuES
AASAtomicAbsorptionSpectroscopy(AAS)isasingle-elementtechnique,usedasanalternativetechniquefortroublesomeelementslikeNaandKincomplicatedmatrices.ItisalsousedwhenICP-OESisunabletodotheanalysisforaparticularelement,owingtointerference.Forsomeelements,AAShaslowerdetectionlimitsthanICP-OES.
ASDhasthreeAAinstruments,oneofwhichisaGraphiteFurnaceinstrumentthatallowsdetectionlimitsdownto0.008ppmforAuinsolutions.
No. Description Analyte list Determination limit
MS6QuantitativeAnalysisafterappropriatedilution
Allelements,excludingNa,C,S,P,Si,K,Caandgases.Radioactivematerial-onlyUandTh
0.01ppm
MS7 Semi-quantitativescanAllelements,excludingNa,C,S,P,Si,K,Caandgases.Radioactivematerial-onlyUandTh
0.01ppm
No. Description Analyte list Minimum mass/vol. Determination limit
AA1 Aciddigestion
Na,K,Mg,Ca,Li
2ppm
Ca 10ppm
AA2 AciddigestionAg,As,Au,Cd,Co,Cu,Fe,Mn,Mo,Ni,Pb,Zn
Ag,Cu 5ppm
Ni,Pb,Zn 15ppm
Cd,Co,Fe,Mn 25ppm
Mo 50ppm
As 80ppm
Au 100ppm
AA3 Fusion
Al 150ppm
Ba,Sb,Sr 50ppm
Bi 10ppm
Cr 200ppm
Sn 1000ppm
V 70ppm
AA4 SequentialCuanalysis Oxide,cyanideandresidual 1g 20ppm
AA5Afterappropriatedilution
Na,K,Ag 0.1ppm
Mg,Li,Cu 0.2ppm
Ca,Cd,Pb,Sr,Zn
0.5ppm
Co,Cr,Mn 1.0ppm
Mo,Al,As,Sn,Bi 5ppm
Ba,Fe,Ni,Sb 2ppm
V 2.5ppm
AuonflameAA 0.6ppm
AuincyanidesolutionsbyETA 0.008ppm
10
WaVElENGTH-DiSPErSiVE XrFX-rayFluorescence(XRF)iswellknownforitsaccuracyandreliability.Thistechniqueisuniversallyacceptedasindustry’sstandardandpreferredtechniqueforsolidanalysis.SampletypesanalysedbyXRFrangefromgeologicaltometallurgicalprocessmaterialsforthedeterminationofmajor,minorandminortotraceelements.
Environmentalanalysisoffiltersbyaquicksemi-quantitativescanhasbeenparticularlyusefulindeterminingvolatileelementsassociatedwithaciddigestion.
Samplesforanalysisarepreparedaseitherpowderbriquettesorfusedbeads,dependingonmatrixandtheclient’srequest.
Thesectionhas3XRFinstruments:
• AnenergydispersiveX-rayinstrument(EDX)–Forquicksemi-quantitativescansofsolidsandsolutions;
• Awavelengthdispersiveinstrument(WDX)–IdealforUanalysisandR&Dwork.Instrumentalsohasmappingcapability;and,
• Amulti-channelinstrument(MXF)–Hasthecapabilityof36elementsanalysedsimultaneouslywiththeaddedoptionofascanningchannelfromTitoU.Theinstrumenthasa100autosampler.Especially,purchasedtoprovidequickturnaroundtimes.
Methodsarealsodevelopedtoclients’specifications,providedtherequestiswithinacceptablelimits.
No. Description Analyte list Minimum mass/vol. Determination limit
XRF1Andalusitesamplesonapressedpellet
Al2O3,Fe2O3,SiO2 8g
Al2O3 190ppm
SiO2 35ppm
Fe2O3 25ppm
XRF2Mnoresamplesonapressedpellet
8g
Mg,Al,Si, 100ppm
Ca,Mn 20ppm
Fe 15ppm
XRF3Merensky/UG2oresonapressedpellet
8g
Cu&Ni 1ppm
Mg 100ppm
Cr 15ppm
XRF4Semi-quantitativescanonpressedpellet(undervacuum)
Allelementsexcluding:ThosewithZ<13ScandPGMs
RareEarthElementsexceptLa,Ce,HfRadioactiveelementsexceptU,Th
8g N/A
XRF5Qualitative/semi-quantitativepowderscan
Allelementsexcluding:ThosewithZ<13ScandPGMs
RareEarthElementsexceptLa,Ce,HfRadioactiveelementsexceptU,Th
5g N/A
XRF6Alloyscanto100%totals
Dependingonthealloy Smoothsurfacedisc<32mmdiameter N/A
XRF7 Apatite P,Fe,Ca,Al 8g
XRF8 Feore Fe,Si,Al,P 8g
11
MiSCEllaNEOuS METHODSManytypesofclassicalanalysisaredonebyvolumetric,gravimetricandspectrophotometricdetermination.Thesetechniquesareusefulforhigh-precisionwork,aswellasforsomedifficultanalysesandinparticularspeciationofelements.
Sulphur and carbon
Gases
Water analysis
Description Method Minimum mass/vol. Determination limit
Total S Combustion(LECO) 0.5-1.0g 0.01ppm
Elemental S Gravimetric,afterextraction 0.5-1.0g 0.2ppm
Sulphate S Gravimetric,afterextraction 0.5-1.0g 0.2ppm
Sulphide S Combustion,afterSO4removal 0.5-1.0g 0.1ppm
SO4 or total S Gravimetric 10g
Sulphide in solution Iodometrictitration 10g
Total C Combustion 0.5-1.0g 0.01ppm
Organic C Combustionafterextraction 0.5-1.0g 0.1ppm
Carbonate C TotalC-OrganicC 0.5-1.0g 0.5ppm
Description Method Minimum mass/vol. Determination limit
Oxygen* Combustion 20ppm**
Nitrogen* Combustion 0.5-1.0g 20ppm**
*Methodcalibratedforsteel**Dependsonmatrix
Description Method Minimum mass/vol. Determination limit
pH pHelectrode n/a n/a
Conductivity Electrode n/a n/a
TDS (Evaporation) Gravimetric n/a n/a
TSS Gravimetric n/a n/a
Total hardness Titration n/a n/a
Alkalinity Titration n/a n/a
Acidity Titration n/a n/a
Dissolved oxygen Electrode n/a n/a
12
Environmental analyses
Coal and graphite
Halides
Other analytes
Description Method Analyte list Minimum mass/vol.
Determination limit
TCLP LeachprocedureaccordingtoEPA 105g n/a
Acid rain LeachprocedureaccordingtoEPA 105g n/a
Acid rainByICP-MSafteracidrainleach
Li,Be,B,Ti,V,Cr,Mn,Co,Ni,Cu,Zn,As,Se,Sr,Zr,Mo,Ag,Cd,Sn,Sb,Ba,Hg,Pb,Bi
n/a n/a
ByICP-MSOESafteracidrainleach Na,Mg,Al,Si,P,S,K,Ca,Fe n/a n/a
TCLPByICP-MSafteracidrainleach
Li,Be,B,Ti,V,Cr,Mn,Co,Ni,Cu,Zn,As,Se,Sr,Zr,Mo,Ag,Cd,Sn,Sb,Ba,Hg,Pb,Bi
n/a n/a
ByICP-MSOESafteracidrainleach Na,Mg,Al,Si,P,S,K,Ca,Fe n/a n/a
Metallics leached from solid samples
Byinstrumentaltechnique–e.g.ICP-OES Fe,Al,orbyrequest 0.5–1.0g
Description Method Analyte list Minimum mass/vol.
LOILossonignitionat950ºCor(othertemperatures)
2g
Moisture Moistureat105-110ºC 2g
Ash Ashingat950ºC 2g
Proximate analysis of coal Moisture,ash,volatilesandfixedcarbon 10g
Graphite Moisture,ash,volatilesandfixedcarbon 10g
Description Method Analyte list Minimum mass/vol. Determination limit
Cl in solids Gravimetric,potentiometricorturbimetric(dependsonlevel)
Fusion5g
0.03%
Aciddissolution 60ppm
Cl in solution PotentiometricFusion
5gAciddissolution
F in solids Ion-selectiveelectrodeFusion
5g0.1%
Aciddissolution 200ppm
Description Method Minimum mass/vol. Determination limit
P (or P2O5) in solids Colourimetricafterfusion 2g 10ppm
P (or PO4) in solutions Colourimetric 20g
NH4 in solutions Colourimetric 20g
NH4Distillation/back-titration 5g
Cr6+ in solids Matrix-dependent 5g
Cr6+ in solution Colourimetric 5g 0.02ppm
Fe2+ in chromites Titrationafterfusion 10g
Fe2+ in solids Titrationafterfusion 10g
Fe2+ in solutions Titration 10g 0.1g/l
Ti3+ Titration(totalFemustbesubtracted) 20g
SiO2Gravimetric 5g
CO2/CO3Distillation/gravimetric 5g
**ByAgreemenetonly.Otheranalysesareavailableonrequestandafterdiscussion/consultation.
13
SarM PrOGraMMEMintekisaproducerofmetallurgicalandgeologicalCertifiedReferenceMaterials(theSouthAfricanReferenceMaterialsor“SARMS”series).ThesematerialsaremadeaccordingtoISOGuides30to35whichdescribethebestpracticesforManufacturingandCertification.Thereareover70referencematerialsavailable(ores,heavyminerals,soils,sediments,coal
androcks),andthesearecontinuallybeingaddedtoinanongoingprogramme.
TyPE DESCriPTiON SarM NuMBEr uNiT OF PaCKiNG
rock
s an
d m
iner
als
Granite SARM 1 NIM-G 100 g
Syenite SARM 2 NIM-S 100 g
lujavrite SARM 3 NIM-L 100 g
Norite SARM 4 NIM-N 100 g
Pyroxenite SARM 5 NIM-P 100 g
Dunite SARM 6 NIM-D 100 g
Kimberlite SARM 39 100 g
Carbonatite SARM 40 100 g
Carbonaceous shale SARM 41 100 g
Soil SARM 42 100 g
Magnesite SARM 43 100 g
Sillimanite schist SARM 44 100 g
Kinzingite SARM 45 100 g
14
TyPE DESCriPTiON SarM NuMBEr uNiT OF PaCKiNGro
cks
and
min
eral
sStream sediment SARM 46 100 g
Serpentinite SARM 47 100 g
Fluorspar granite SARM 48 100 g
Quartz SARM 49 100 g
Dolerite SARM 50 100 g
Stream sediment SARM 51 100 g
Stream sediment SARM 52 100 g
Heav
y m
iner
als
Titanium slag (rBM) SARM 57 100 g
Titanium slag (aaC) SARM 58 100 g
ilmenite (rBM) SARM 59 100 g
rutile (rBM) SARM 61 100 g
Zircon (rBM) SARM 62 100 g
Ferr
o-al
loys Ferrosilicon SARM 33 100 g
Ferrochromium SARM 74 100 g
Ferrochromium slag SARM 77 100 g
Prec
ious
met
als Gold tailings SARM 54 500 g, 2 kg
Gold calcine SARM 56 500 g
PGM ore uG2 low SARM 70 3 kg
PGM ore uG2 high SARM 72 3 kg
ABOUT MINTEK
Mintek is an autonomous research and development (R&D) organisation specialising in all aspects of mineral processing,
extractive metallurgy and related technology. Working closely with minerals and metal producers locally and internationally,
Mintek develops and transfers innovative, new and improved technology to industry for processing, extracting, refining
and utilising minerals and mineral products.
Mintek offers R&D expertise, service testwork, and technologies for the gold, platinum-group metals (PGM), base metals,
ferro-alloys, and industrial minerals sectors. Extensive laboratory and pilot-plant facilities are available for investigations
in the following fields:
• Analysis - characterisation of ores and other materials, analytical chemistry and mineralogical techniques;
• Mineral processing - comminution, flotation, gravity, electrostatic, magnetic, and dense-media separation;
• Hydrometallurgy - leaching, bacterial oxidation, adsorption (CIP and RIP), solvent extraction, and electrowinning;
• Pyrometallurgy – pre-heating and pre-reduction, submerged-arc and DC transferred-arc smelting, converting,
condensing, and process simulation; and,
• Other specialised technologies - metallurgical process control and optimisation, tank and heap bio-leaching of
gold and base metals, alloy development, pollution studies, residue processing, and techno-economic studies.
Mintek’s activities range from initial investigations to complete process development and, in conjunction with engineering
partners, the design, construction, and commissioning of plants.
MINTEK’S ANALYTICAL SERVICES DIVISION
Mintek’s Analytical Services Division (ASD) is a well-established analytical chemistry laboratory that specialises
in geochemical and general analytical chemistry. We provide analytical support to clients in the mineral,
metallurgical and related industries, using state-of-the-art instrumentation for a variety of techniques.
Our highly skilled scientists and analysts are backed-up by a top-quality consulting team, all operating
according to ISO standards. We have a wide range of facilities that ensures a quality one-stop for exploration
and general analytical services.
12
TYPE DESCRIPTION SARM NUMBER UNIT OF PACKINGPr
ecio
us m
etal
sPGM ore Merensky SARM 73 3 kg
PGM ore Sheba’s Ridge SARM 75 3 kg
PGM ore Merensky SARM 76 3 kg
Coal
Coal (Witbank) SARM 18 120 g
Coal (OFS) SARM 19 120 g
Coal (Sasolburg) SARM 20 120 g
Uran
ium
Uranium, acid leach residue SARM 21 UREM 1 200 g
Uranium, pyrite concentrate SARM 23 UREM 3 200 g
Uranium, slimes dam material SARM 24 UREM 4 200 g
Uranium, pyrite concentrate SARM 25 UREM 5 200 g
Uranium, pyrite concentrate SARM 26 UREM 6 200 g
Uranium, acid leach residue SARM 27 UREM 7 200 g
Uranium, Witwatersrand ore SARM 29 UREM 9 200 g
Ores
and
sem
i-pr
oces
sed
mat
eria
ls Phosphate rock SARM 32 100 g
Andalusite SARM 34 100 g
Vanadium pentoxide SARM 38 100 g
Fluorspar (Zeerust) SARM 15 100 g
Manganese ore (Wessels) SARM 16 100 g
Manganese ore (Mamatwan) SARM 17 100 g
Pot shard (archaeological ceramic) SARM 69 100 g
15
Analytical Services Division
SCHEDULE OF SERVICES
200 Malibongwe Drive Randburg
2125 South Africa
Phone: +27 11 709 4046Fax: +27 11 793 2413
E-mail: asdenquiries@mintek.co.za
ACCREDITED METHODS
Fire Assay (Gravimetric Au, totPGM +Au, 3E, 4E, 6E) | Combustion (Total C, Total S) | ICP-OES (FeCr ores & Slags)AAS (Na & K in ores) | XRF (U in ores, Fe ore)
Testing Laboratory
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