Romain Le Roux-Mallouf, Géolithe, R&D, Grenoble, France, Matthieu Alexis Ferry, Université Montpellier 2, Montpellier, France, Jean-Francois Ritz, Univ Montpellier II, Montpellier, France, Rodolphe Cattin, University of Montpellier, Géosciences Montpellier, Montpellier, France, Dowchu Drukpa, Department of Geology and Mines, Ministry of Economic Affairs, Thimphu, Bhutan and Phuntsho Pelgay, Ministry of Economic Affairs, Department of Geology and Mines, Thimphu, Bhutan