|
Brazil | |
| Wolfgang Hampel, site visit April 2008 |
| Cornejo, Carlos, Bartorelli, Andrea (2009) Minerals & Precious Stones of Brazil. Solaris Cultural Publications, São Paulo. |
| www.minsocam.org (2004) http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/2002/Eeckhout_p1297-1306_02.pdf |
| Robinson, G.W., Wegner, R.R. (1998) Mineralogy of the Boqueiraozinho pegmatite, Parelhas, Rio Grande do Norte, Brazil. The Mineralogical Record: 29: 193-197. |