1. GEOSOLUTIONS TRD 99b Rue d’Ossau France
2. Utah Geological Survey 1594 W. North Temple Salt Lake City
3. Department of Geosciences University of Fribourg Ch. du Musée 6 1700 Fribourg
4. Centre for Mineral Technology – CETEM Avenida Pedro Calmon, 900, Cidade Universitária 21941‐908 Rio de Janeiro RJ Brazil
5. National Museum, Federal University of Rio de Janeiro, Postgraduate Program in Geosciences Av. Quinta da Boa Vista, Bairro Imperial de São Cristóvão Rio de Janeiro 20940040 Brazil
6. Department of Geosciences Utah State University 4505 Old Main Hill Logan
7. EarthScienceEducation.org Salt Lake City 84103