X-Ray Diffraction Pattern: Fumal pegmatite, near Nazareno, Minas Gerais, Brazil. 3.011 (100), 6.023 (89)...36 0.75 0.31 99.91 (1) Fumal pegmatite, near Nazareno, Minas Gerais, Brazil; average electron microprobe...granitic pegmatite. Association: Columbite subgroup minerals, cassiterite, hematite, ilmenite, monazite-(Ce)...Distribution: From the Fumal pegmatite, 18 km north of Nazareno, Minas Gerais, Brazil [TL]; in the Varuträsk...Varuträsk pegmatite, northeastern Sweden; in pegmatites of the Vigezzo Valley, western Alps, Italy. Name: |