Baldwin, J.R.; Hill, P. G.; Von Knorring, O.; Oliver, G. J. H. (2000). "Exotic aluminium phosphates, natromontebrasite, brazilianite, goyazite, gorceixite and crandallite from rare-element pegmatites in Namibia". Mineralogical Magazine. 64 (6): 1147–1164. Bibcode:2000MinM...64.1147B. doi:10.1180/002646100549940. ISSN0026-461X. S2CID128836092.
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Baldwin, J.R.; Hill, P. G.; Von Knorring, O.; Oliver, G. J. H. (2000). "Exotic aluminium phosphates, natromontebrasite, brazilianite, goyazite, gorceixite and crandallite from rare-element pegmatites in Namibia". Mineralogical Magazine. 64 (6): 1147–1164. Bibcode:2000MinM...64.1147B. doi:10.1180/002646100549940. ISSN0026-461X. S2CID128836092.
Baldwin, J.R.; Hill, P. G.; Von Knorring, O.; Oliver, G. J. H. (2000). "Exotic aluminium phosphates, natromontebrasite, brazilianite, goyazite, gorceixite and crandallite from rare-element pegmatites in Namibia". Mineralogical Magazine. 64 (6): 1147–1164. Bibcode:2000MinM...64.1147B. doi:10.1180/002646100549940. ISSN0026-461X. S2CID128836092.
Baldwin, J.R.; Hill, P. G.; Von Knorring, O.; Oliver, G. J. H. (2000). "Exotic aluminium phosphates, natromontebrasite, brazilianite, goyazite, gorceixite and crandallite from rare-element pegmatites in Namibia". Mineralogical Magazine. 64 (6): 1147–1164. Bibcode:2000MinM...64.1147B. doi:10.1180/002646100549940. ISSN0026-461X. S2CID128836092.