Share on LinkedInShare on LinkedInShare on FacebookShare on FacebookTweet thisTweet this

Agriculture and Food

Categories

Minimize menuMaximize menu

Minimize menuMaximize menuHomeAgriculture & FoodFertilizersAnalytical ServicesParticulate TestingClay Identification & Analysis

Related Links

Clay Identification and Analysis

Clay minerals are used in a wide variety of industries, including ceramics, oil drilling, mining, paints, coatings, absorbents and the metal and paper industry. These industries face a host of clay-related problems. Clays can be difficult to characterize due to their small size, variable structural composition and relative slow kinetics of formation and alteration. SGS has the industry-leading expertise in High Definition Mineralogy to provide clay identification and interpretation.

XRD (X-ray diffraction) provides rapid identification of minerals and reveals detailed information about the chemical composition and crystallographic structure of your samples. It is useful for identifying fine grained phases which are difficult to identify optically, by Scanning Electron Microscope/Energy Dispersive Spectrometer (SEM/EDS) or Quantitative Evaluation of Materials by Scanning Electron Microscopy (QEMSCAN®).

Applications

XRD is the preferred method for clay speciation, particularly swelling clays such as smectites. Clay mineralogy can provide a critical indicator of the presence of mineralization. This technology has a number of important applications for clays:

  • Indication of presence of mineralization
  • Identification of fine grained phases
  • Understanding mineralogy textures and grain size distribution for processing activities

Clay Speciation XRD Analysis

Clay minerals identified by X-ray diffraction analysis will be reported and grouped into major (>30%), moderate (10-30%), minor (2-10%) and trace (<2%) amounts. Due to the poor crystallinity of clay minerals, the samples are separated using a centrifuge followed by a series of procedures (e.g. the addition of ethylene glycol and high temperature heating). This preparation is necessary to differentiate between clay species.

Semi-quantitative Clay Speciation XRD Analysis

Clay minerals can be reported and grouped into major, moderate, minor and trace amounts. Mineral abundances for the bulk sample (in weight %) generated by RIR (or Rietveld) XRD analysis will be reconciled with a whole rock analysis plus the analysis of any other major elements contained in the sample and reported. Whole rock analysis by X-ray fluorescence spectroscopy includes SiO2, Al2O3, Na2O, K2O, CaO, MgO, Fe2O3, Cr2O3, MnO, TiO2, P2O5, V2O5 and LOI.

SGS is the industry leader in High Definition Mineralogy for the global minerals industry and other market sectors that need detailed material, product or residue characterizations. For quantitative mineralogical analysis and determination of clay technological properties, trust SGS.

Clay identification and analysis in the USA

The service in which you are interested is not currently available in the USA. However, SGS has two Advanced Mineralogy Facilities in Canada, one located in Lakefield, Ontario, and the other in Vancouver, British Columbia.  Our laboratory in Lakefield offers you over 25 years of XRD expertise and is one of the few commercially available North American testing platforms for this technology. Contact us to find out more.

Email us
Hot Source Food Newsletter 1Hot Source Food Newsletter 1FSSC 22000, DNA Meat Testing, HACCP Re-Validation & more ...

Contact

SGS North America Inc

  • 201 Route 17 North
    Rutherford, New Jersey, 07070
    United States
  • t   +1 201 508 3000
  • f   +1 201 508 3183
  • e   Email us

E-Subscriptions

Sign up to SGS publications and newsletters from your region and around the world.
STAY UP TO DATE.SUBSCRIBE NOW

Office Directory

Find SGS offices and labs around the world.USA map
Office Locator

News

events