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Mineral Alteration Footprints and Portable Field Techniques (ASD, XRF..)

Date: 2 - 6 July 2018

Duration: 5-days (0900-1700)

Location: Burkina Faso

Organised by: University of Lorraine (France)
: WAXI Member €1,800 - Non-Members €2,400

About the Course

This 5 day training course will provide an introduction on mineral alteration footprints and portable field techniques. This course will be offered to all AMIRA sponsors, including in-kind sponsors, and is aimed at geologists wishing to improve their skill base in geochemistry.
Conventional geochemistry remains very important to mineral exploration, while promising new techniques are being tested. Selection of the appropriate exploration methods must be dictated by the characteristics of the targeted model, its geological setting, and the surficial environment. Geologists are now better equipped than ever to face this difficult challenge, but geological understanding and quality field work remain the key underpinnings of exploration campaigns.
This course will be organized in three parts.

  • Theoretical elements will be first brought on geochemistry, primary geochemical features of deposits as well as key elements of their footprints, defined here as the combined characteristics of the deposits themselves and of their local to regional settings. Focus will be put on orogenic gold, but attendees may propose other type of deposits to adjust the course content.
  • The second part deals with the techniques and approaches that can now be used for the recognition and detection of these footprints. Spectroscopic setups designed for field work applications are useful tools for gathering the best possible data during field works. This short course is intended to remind the physical basis on which spectroscopic tools rely and technical breakthrough that made some of these techniques applicable on the field. Practical sessions will be dedicated to testing the possibilities and limitation of some techniques. Foreseen field tools are: X-Ray Fluorescence, V-NIR-SWIR, Gamma-ray Spectroscopy, Raman, Mid-Infrared, Laser-Induced Breakdown Spectroscopy and X-Ray Diffraction. Contacts are being taken and the actually available techniques will be advertised later.
  • The two last days will be dedicated to practical courses both on geochemical database treatment and use of spectroscopic tools on natural samples (outcrop, drill core, etc…). All attendees will have the opportunity to participate in collaborative interpretations of their own data sets, as well as proposal of the portable devices they wish to be trained on.

This training course will be driven by Jean Cauzid (Spectroscopy), Aurélien Eglinger (mineral systems, footprints, geochemistry), and Anne-Sylvie André-Mayer (mineral systems, geochemistry, orogenic gold), from the Université de Lorraine, GeoRessources laboratory.