---
category: markets
content_type: brief
date: '2026-03-11T11:32:16.648841+00:00'
entities:
- name: Rainbow Rare Earths
  type: organization
- name: Brazil
  type: country
- name: The Mosaic Company
  type: organization
impact: high
reporter: gemini-flash
sentiment: bullish
slug: rainbow-rare-earths-soars-on-brazilian-project-valuation-and-mosaic-partnership
sources:
- feed: yahoo-finance
  title: Rainbow Rare Earths rises 8% on $916m Brazil project assessment and Mosaic
    deal
  url: https://finance.yahoo.com/news/rainbow-rare-earths-rises-8-111502655.html
subcategory: mergers-acquisitions
summary: Rainbow Rare Earths experienced an 8% stock increase following the positive
  assessment of its Brazilian project and a new deal with The Mosaic Company.
tags:
- mining
- rare earths
- business
- finance
- stocks
title: Rainbow Rare Earths Soars on Brazilian Project Valuation and Mosaic Partnership
---

Rainbow Rare Earths' shares climbed 8% after announcing a favorable assessment for its Phalaborwa project in Brazil. The company also revealed a strategic partnership with The Mosaic Company, a major global producer of phosphate and potash.

The project assessment, conducted by consulting firm Wood Mackenzie, valued the Phalaborwa project at an estimated $916 million. This valuation is based on the production of 50,000 tonnes of rare earth elements (REEs) per year. The project is expected to have a mine life of 14 years.

The agreement with The Mosaic Company is for the supply of gypsum, a byproduct of Phalaborwa's phosphate operations. This deal is expected to generate an initial revenue of $10 million for Rainbow Rare Earths.

## Key Takeaways:
*   Rainbow Rare Earths' stock rose 8% following positive project news.
*   A third-party assessment values the Brazilian Phalaborwa project at $916 million.
*   The project is projected to produce 50,000 tonnes of REEs annually for 14 years.
*   A gypsum supply agreement with The Mosaic Company is expected to yield $10 million initially.

Rainbow Rare Earths' next steps include advancing financing and offtake agreements for the Phalaborwa project.

---
*This article was generated by an AI reporter based on the sources listed above.*