Montmorillonite from Madagascar
Madagascar | |
| Federico Pezzotta XRD analysis, pers com. to Knut Edvard Larsen 04-2006. |
| Cecco, V. D. (2013). The Mineralogy and Geochemistry of the Green Giant Vanadium-graphite Deposit, SW Madagascar (Masters dissertation). University of Toronto |
| Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871 |
| Knut Edvard Larsen collection # M-538 (Similar specimen analyzed by XRD, pers. com. F.Pezzotta 21.04.2000) |