|
Namibia | |
| Rocks & Minerals 83:6 pp520-526 |
| Econ Geol (1989) 84:603-617 |
| Christian Bracke Collection. |
| [var. Sagenite (of Saussure)] Locker, H. (2011): "Alpine" Rutile und Quarzkristalle: Rooisand am Gamsberg/Namibia. Lapis 36 (7-8), 21-25. |
| (n.d.) Collection, Natural History Museum Vienna. |
| von Bezing, Ludi (2007) Namibia - Minerals and Localities. Bode Verlag GmbH, Haltern. |
| von Bezing, Ludi (2007) Namibia - Minerals and Localities. Bode Verlag GmbH, Haltern. |
| Herbert Nägele collection |
| Betts, John (n.d.) John Betts website listing. |
| Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.74-80 |
Onganja Mine, Helen Farm 235, Seeis, Windhoek Rural, Khomas Region, Namibia