About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
Utah Geological Association
Abstract
Rare Earths in Phosphorites—Geochemistry and Potential Recovery
Abstract
Rare earths are only trace constituents of marine apatite, but as millions of tons of such apatite are dissolved annually to make phosphoric acid, an opportunity exists for greatly increasing rare-earth output as a byproduct of fertilizer production. New, quantitative analyses of rare earths in representative apatite concentrates reveal that the potential for byproduct rare earths equals current production. The rare-earth assemblage in marine apatite is unusual, showing depletion in cerium and relative enrichment in the heavier lanthanons, a favorable distribution for rare-earth technology and utilization. Uranium, thorium, and scandium may also be recoverable from phosphoric acid.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
| Watermarked PDF Document: $14 | |
| Open PDF Document: $24 |