資源情報
ブラジル連邦共和国ゴイアス州のSerra Verde 希土類鉱床
2017 年 67 巻 2 号 p. 117-123
詳細
2017 年 67 巻 2 号 p. 117-123
The Serra Verde Project, which is one of ion-adsorption type project of rare earth elements (REE) outside of China, has been explored in the northernmost part of Goiás State of Brazil. The REE deposit consists of alluvial sediment and underlying saprolitic weathered granite on the Mesoproterozoic Serra Dourada Granite. This granite consists mainly of biotite granite and muscovite-biotite granite characterized by A-type features. Percentages of ionexchangeable REE in weathered granites and clay-bearing sediments are variable between the samples. This article reviews the previous data of the REE deposit and underlying Serra Dourada Granite and reports results of field investigation on July 2016.
