# Lara Exploration Announces Filing of the Preliminary Economic Assessment for its Planalto Copper-Gold Project in Brazil

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/lara-exploration-announces-filing-of-the-preliminary-economic-assessment-for-its--b0514926-6f7a-41a8-97ef-841d0aca9e83

Original source: https://money.tmx.com/en/quote/LRA/news/5877356631338107/lara-exploration-announces-filing-of-the-preliminary-economic-assessment-for-its

Publisher: tmx

Original announcement: 2025-11-17T10:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Lara Exploration Ltd.

- Ticker: LRA

- Exchange: TSX

- Region: Brazil

- Primary commodity: Copper

- Secondary commodities: Gold

- Document categories: Metallurgy, Other

- Extracted: 2026-09-12 11:28:45 UTC

Narrative sentiment: 0.60 · Bullish

## Minestarters Atlas summary

Lara Exploration has filed a Preliminary Economic Assessment \(PEA\) for its Planalto Copper-Gold Project in Brazil. The study indicates an 18-year mine life with estimated production of 560 kt of copper and 111 koz of gold, supported by an after-tax NPV of US$378 million.

Reasoning: The filing of a PEA for a copper-gold project with strong economic indicators \(NPV/IRR\) and high recoveries is a major project milestone, though it remains at a high-risk scoping stage.

- Positive factor: Strong NPV of US$378M and 21% IRR

- Positive factor: Excellent infrastructure and power access

- Positive factor: High copper recovery of 91%

- Positive factor: Low strip ratio of 2:1

- Negative factor: Includes Inferred Mineral Resources which are speculative

- Negative factor: Study is at the scoping stage \(PEA\)

- Negative factor: Sensitivity to metal prices

- Negative factor: Potential for metallurgical improvements needed

Facts used in scoring: 2

## Classification and evidence

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: The project utilizes a crush-grind-flotation processing plant.

Evidence · text

> Industry standard crush - grind - flotation processing plant

**Bench Scale Only**

Polarity: negative

Definition: Only preliminary bench tests completed — no locked-cycle or pilot work.

Why it applies: The study is a PEA at the scoping stage, implying preliminary metallurgical results.

Evidence · text

> The technical and cost estimates are at the scoping stage

**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: 2. Some facts used in scoring do not have a stored record.

## Metallurgical Results (2)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/lara-exploration-announces-filing-of-the-preliminary-economic-assessment-for-its--b0514926-6f7a-41a8-97ef-841d0aca9e83#fact-metallurgical-facts-0)

Planalto Copper-Gold Project · copper

#### Identity

- Project: Planalto Copper-Gold Project
- Commodity: copper
- Region: brazil
- Reported Region: Brazil
- Ticker: LRA

#### Test Work

- Program Status: scoping
- Test Type: flotation
- Processing Route: crush - grind - flotation
- Sample: Planalto Project PEA production estimate

#### Recovery

- Recovery: 91 %
- Recovery Basis: actual\_test

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-11-17T00:00:00.000Z

Reasoning: High copper recovery reported for the flotation circuit.

- Positive factor: 91% recovery is strong for flotation

Evidence · text

> recovering 91% copper

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/lara-exploration-announces-filing-of-the-preliminary-economic-assessment-for-its--b0514926-6f7a-41a8-97ef-841d0aca9e83#fact-metallurgical-facts-1)

Planalto Copper-Gold Project · gold

#### Identity

- Project: Planalto Copper-Gold Project
- Commodity: gold
- Region: brazil
- Reported Region: Brazil
- Ticker: LRA

#### Test Work

- Program Status: scoping
- Test Type: flotation
- Processing Route: crush - grind - flotation
- Sample: Planalto Project PEA production estimate

#### Recovery

- Recovery: 51 %
- Recovery Basis: actual\_test

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-11-17T00:00:00.000Z

Reasoning: Gold recovery of 51% is modest for a flotation circuit.

- Negative factor: 51% gold recovery is relatively low

Evidence · text

> recovering 91% copper and 51% gold

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 51% is below the weak band \(80%\)

## 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.