Araxa

Araxa (Barreiro)

Carbonatite with residual enrichment rare earth element deposit in Minas Gerais, Brazil

Deposit type: Carbonatite with residual enrichment

REE minerals: monazite, gorceixite, goyazite, bariopyrochlore, ancylite, ceriopyrochlore

Ore minerals: apatite, bariopyrochlore, barite, magnetite, calcite, gorceixite, ilmenite, hematite, gibbsite, böhmite, pandaite, pyrochlore, vermiculite, isokite, pyrite

Gangue minerals: dolomite, arfvedsonite, aegirine-augite, goethite, limonite, kaolinite, quartz

Host rock types: beforsite, glimmerite, sovite, some pyroxenite

Average grade:

Status: Nb-P producer; REE-Ba occurrence

Company: CBMM

Resource estimates: >450 Mt Nb ore @ 2.5% Nb2O5, 4.4% REO + 0.8 Mt laterite ore @ 13.5% REO, 2% Nb2O5, 0.05% U3O8 (1984)

0.546 Mt @ 10-11% REO (1982)

462 Mt @ 0.033% REO

References

  1. https://en.wikipedia.org

  2. http://mrdata.usgs.gov/ree/show-ree.php?rec_id=110

      1. @ Ph.D. Natalia Petrovskaya

      2. June, 2016

      3. nataliapetrovsky@gmail.com