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Russia | |
| www.mineralogicalassociation.ca (n.d.) http://www.mineralogicalassociation.ca/doc/Sphaerobertrandite.pdf |
| www.mineralogicalassociation.ca (n.d.) http://www.mineralogicalassociation.ca/doc/Sphaerobertrandite.pdf |
| www.mineralogicalassociation.ca (n.d.) http://www.mineralogicalassociation.ca/doc/Sphaerobertrandite.pdf |
| www.mineralogicalassociation.ca (n.d.) http://www.mineralogicalassociation.ca/doc/Sphaerobertrandite.pdf |
| Pekov, Igor V., Chukanov, Nikita V., Larsen, Alf Olav, Merlino, Stefano, Pasero, Marco, Pushcharovsky, Dmitriy Y.u., Ivaldi, Gabriella, Zadov, Alexander E., Grishin, Viktor G., Åsheim, Arne, Taftø, Johan, Chistyakova, Nina I. (2003) Sphaerobertrandite, Be3SiO4(OH)2: new data, crystal structure and genesis. European Journal of Mineralogy, 15 (1) 157-166 doi:10.1127/0935-1221/2003/0015-0157 |
Sengischorr Mountain, Lovozersky District, Murmansk Oblast, Russia