Guarapari

Guarapari (Praia do Vaz, Vila Velha, Rastinga, Canto do Riacho, Praia de Diogo)(Espirito Santo)Placer, shoreline rare earth element deposit in Espírito Santo, BrazilDeposit type: Placer, marine, shoreline

REE minerals: monazite

Ore minerals: Ilmenite, rutile, zircon, magnetite

Gangue minerals: quartz

Host rock types: sediments of grupo barreiras and younger units

Average grade:

Status: Current(?) Producer byproduct monazite

Company: Nuclebras de Monazita e Associados Ltda. (1989)

Resource estimates: Measured reserves- 818 t mon @ 60.04% REO (1986)

950 t mon (1987)

Concentrate 60% REO

Most of the deposits of thorium of Brazil are concentrated in two areas that correspond globally to areas with the highest concentration of uranium: to the Center, in the State of Minas Gerais and Bahia, and North-East in the States of Rio Grande do Norte and Paraíba. In these areas the Thorium mineral is found in pegmatites and alluvium. Particular importance from the economic point of view, are the Monazite coastal sands. These deposits of Monazite extends along the coast from the north-eastern end of State of Rio de Janeiro to the North of the pit of the Dulce river in the State of Espírito Santo. New deposits were located further north. In the State of Bahia has an extension of 40 miles. Thorium tenor of Monazite of these deposits is very variable and can reach in some cases, Bahia for example, a 5-6% ThO2.

References

1. https://en.wikipedia.org

2. https://books.google.cl/books?id=jPskAQAAIAAJ&pg=RA4-PA13&lpg=RA4-PA13&dq=Green+Cove+Springs+Mine+monazite&source=bl&ots=8xH_PV9MoG&sig=MkXPfqzQ6OM4zmU2OWc-eHL2-GQ&hl=ru&sa=X&ved=0ahUKEwj6-bG1mfbMAhUDE5AKHYGfCWsQ6AEIKDAD#v=onepage&q&f=false

3. https://thediggings.com/mines/usgs10279958

4. http://www.mindat.org/loc-158047.html

5. Orris, G.J., and Grauch, R.I. (2002): Rare earth element mines, deposits, and occurrences. USGS Open-File Report 02-189.

6. Raúl Jorge Tauber Larry (2012). Arenas Monacíticas de la playa de Guarapari, Estado de Esírito Santo, Brazil.

7. O. Haluska (1975). El Torio en la Naturaleza. Comisión Nacional de Energía Atómica. Programa prioritario de plantas químicas. Argentina.

8. Extractive Metallurgy of Rare Earths. Nagaiyar Krishnamurthy, ‎Chiranjib Kumar Gupta (2015)

9. The Rare Earth Elements: An Introduction. J.H.L. Voncken

10. Industrial Applications of Rare Earth Elements. K. A. Gschneidner, Jr.