Baumgartner, M., E. Ankar, and H. Grütter. 2003. “Compositional Classification of ’kimberlitic’ and ’non- kimberlitic’ Ilmenite, With Implications for Visual Selection and Discrimination”. International Kimberlite Conference: Extended Abstracts 8 (June). https://doi.org/10.29173/ikc3182.