# Rainbow Rare Earths moves Uberaba project into pre-feasibility

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/rainbow-rare-earths-moves-uberaba-project-into-pre-feasibility--572e5c13-a70f-4972-963f-fd23e6ee4918

Original source: https://www.proactiveinvestors.com/companies/news/1098158/rainbow-rare-earths-moves-uberaba-project-into-pre-feasibility-1098158.html

Publisher: proactiveinvestors

Original announcement: 2026-09-07T07:31:28.933Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Rainbow Rare Earths Ltd

- Ticker: RBW

- Exchange: Unavailable

- Region: Brazil

- Primary commodity: Rare earths

- Secondary commodities: Neodymium, Praseodymium

- Document categories: Metallurgy, Agreement transaction

- Extracted: 2026-09-07 07:32:49 UTC

Narrative sentiment: 0.60 · Bullish

## Minestarters Atlas summary

Rainbow Rare Earths has commenced a Pre-Feasibility Study \(PFS\) for its Uberaba project in Brazil in collaboration with The Mosaic Company. The study aims to evaluate an on-site processing plant for phosphogypsum waste and includes the appointment of SRK Consulting to prepare a maiden JORC-compliant resource estimate.

Reasoning: The announcement marks a significant project milestone \(moving to PFS\) and involves a major industry partner \(Mosaic\), though it relies on a previous economic assessment rather than new assay results.

- Positive factor: Advancement to PFS stage

- Positive factor: Strategic partnership with Mosaic Company

- Positive factor: Strong economic indicators from previous assessment \(NPV $916M\)

- Positive factor: Proprietary technology application

Facts used in scoring: 1

## Classification and evidence

**QP/CP Signed**

Polarity: positive

Story-specific tag

Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience.

Why it applies: SRK Consulting has been appointed to prepare the maiden JORC-compliant resource estimate.

Evidence · text

> SRK Consulting appointed to prepare its maiden JORC-compliant resource estimate

**Single Domain Only**

Polarity: negative

Definition: Testing limited to one composite or domain — representativeness not established.

Why it applies: only one composite was tested

## Extracted facts

Stored fact records: 1. Some facts used in scoring do not have a stored record.

## Metallurgical Results (1)

### Fact 1

[Link to this fact](https://atlas-staging.minestarters.com/news/rainbow-rare-earths-moves-uberaba-project-into-pre-feasibility--572e5c13-a70f-4972-963f-fd23e6ee4918#fact-metallurgical-facts-0)

rare\_earths

#### Identity

- Commodity: rare\_earths
- Ticker: RBW

#### Test Work

- Sample: phosphogypsum waste feedstock

#### Recovery

- Head Grade: 5100
- Head Grade Unit: ppm

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-07T00:00:00.000Z

Reasoning: The grade is based on a previous model for the project feedstock.

- Positive factor: Significant feedstock volume \(2.7Mt/y\)

Evidence · text

> originally modelled at a head grade of roughly 5,100 parts per million total rare earth oxides

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.