Lion Rock Minerals Defines 130km² High-Grade Rutile Corridor in Cameroon

Lion Rock Minerals Uncovers High-Grade Rutile Corridor Spanning 130km² in Cameroon

Lion Rock Minerals (ASX: LRM) has reported that drilling at its Minta Rutile and Monazite Project in central Cameroon is defining a high-grade residual rutile corridor across 130km² at the Mboma and Loum tenements. Results from 588 mineralogy intervals across 125 holes returned peak assemblage grades of 72.7% rutile-in-heavy minerals (HM) at Mboma and 65.4% rutile-in-HM at Loum, with natural rutile nuggets confirmed by a second accredited laboratory at more than 98% titanium dioxide (TiO₂).

For investors, the significance lies in a combination of scale, shallow mineralisation, grade distribution and product quality indicators. The results suggest Lion Rock is building a larger geological picture rather than relying on isolated high-grade samples, while a 6,494-sample assay and validation queue provides a steady pipeline of potential news flow over coming months.

What Does a Residual Rutile Corridor Mean for Investors?

Residual rutile is formed when original host rocks break down through long-term weathering, leaving behind more resistant heavy minerals such as rutile near the surface. In simple terms, this can create broad, shallow zones where rutile becomes concentrated in weathered soil and iron-rich layers rather than being locked deep in hard rock.

A corridor refers to a connected trend of mineralisation extending across multiple target areas or licences. In the Minta update, Lion Rock reported that drilling is extending the rutile system from Mboma toward Loum, which matters because continuity is one of the foundations needed for a future Mineral Resource Estimate (MRE).

Key Technical Terms Explained

Several technical terms in the announcement are important for non-specialist investors:

Because the mineralisation is shallow, the company is using hand-auger and Dormer-style auger drilling, which the announcement describes as a low-cost way to test large areas quickly. That is an operational point worth noting, particularly across an 8,800km² district-scale project.

Mboma Sets the Early Grade Benchmark

According to the report, Mboma produced 266 mineralogy intervals from 52 holes, with the rutile-in-HM assemblage reaching a maximum of 72.7%. Furthermore, the Mboma dataset demonstrated meaningful distribution across multiple grade thresholds.

The Mboma dataset included:

• 101 intervals above 40% rutile-in-HM
• 56 intervals above 50% rutile-in-HM
• 29 intervals above 60% rutile-in-HM
• Average in-situ rutile of 0.54%
• 111 intervals above 0.50% in-situ rutile
• 17 intervals above 1.0% in-situ rutile

Strongest Single-Sample Mboma Results

The strongest single-sample Mboma rutile-in-HM results reported were:

Top Mboma in-situ rutile intervals included:

The report also highlighted broader composite intervals, which can be more useful than isolated one-metre samples when assessing continuity. These included:

• 5.8m at 69.2% rutile-in-HM from surface in MB0130
• 7.55m at 62.3% rutile-in-HM from surface in MB0119
• 8.2m at 61.6% rutile-in-HM from surface in MB0138

These reported widths suggest that higher-grade mineralisation may extend through meaningful sections of the shallow weathering profile.

Loum Extends the Corridor Concept

At Loum, Lion Rock reported 322 mineralogy intervals from 73 holes, with rutile-in-HM averaging 31.0% across the dataset and peaking at 65.4%. In addition, the Loum data set demonstrated strong representation at higher grade thresholds.

Key Loum statistics from the update were:

• 115 intervals above 40% rutile-in-HM
• 61 intervals above 50% rutile-in-HM
• 11 intervals above 60% rutile-in-HM
• Average in-situ rutile of 0.55%
• 160 intervals above 0.50% in-situ rutile
• 32 intervals above 1.0% in-situ rutile

Strongest Single-Sample Loum Results

The strongest Loum single-sample rutile-in-HM results were:

Top Loum in-situ rutile intervals included:

Across the combined Mboma-Loum dataset, the company reported 271 intervals above 0.50% in-situ rutile and 49 intervals above 1.0%, supporting the view that mineralisation is distributed across the target area rather than being limited to a handful of standout samples.

"Mboma's high-grade rutile assemblage values of 72.7% rutile in HM and Loum returning 65.4% rutile in HM are not isolated points; they sit within a broader distribution of high-grade intervals that support disciplined testing of a developing Mboma-Loum residual rutile corridor." — Theuns de Bruyn, CEO, Lion Rock Minerals

Why Do >98% TiO₂ Rutile Nuggets Matter?

One of the more eye-catching parts of the ASX release was the confirmation by a second accredited independent laboratory of natural rutile nuggets from Mboma and Loum returning more than 98% TiO₂, including sample MRGR0029 at 98.4% TiO₂.

That does not mean the wider deposit averages 98% TiO₂. The announcement does not make that claim, and nugget samples are not representative of bulk ore grade. However, such results are relevant because they indicate the presence of very high-purity natural rutile within the system.

For investors new to titanium minerals, rutile quality matters because end markets value both grade and impurity profile. Higher-purity rutile may require less downstream upgrading than lower-quality titanium-bearing minerals, though full product and processing assessments would still be needed. In practical terms, the nugget data are best viewed as a qualitative indicator of mineral quality, not a substitute for resource definition or metallurgical testwork.

Ferruginous Horizon Points to Depth Potential

The exploration update also drew attention to a geological relationship between higher rutile grades and the ferruginous horizon, an iron-rich layer below the topsoil. This matters because it suggests mineral enrichment may continue below the immediate surface layer.

According to the company, that creates immediate depth extension potential for follow-up drilling across residual targets. For investors, this could become important in two ways:

1. Potential resource growth, if deeper drilling confirms additional mineralised zones.
2. Better geological control, which management has identified as part of the next stage of ranking and testing the strongest rutile targets.

At this point, the depth concept remains an exploration target rather than a defined outcome. Nevertheless, it gives the current shallow drilling programme another technical angle to test.

Minta Est Adds a Parallel REE Workstream

The report also confirmed that all drilling crews have been remobilised to Minta Est, where Lion Rock is evaluating monazite and rare earth element (REE) potential in alluvial systems. Previously reported calculated monazite results being followed up include:

• 6.0m at 1.2% monazite from 3.0m in MRAU0853
• 2.0m at 3.3% monazite from 8.0m in MRAU0862
• 5.7m at 1.0% monazite from 4.0m in MRAU0971

According to the update, samples from the latest Minta Est work will be sent to an independent external laboratory for a full REE analytical suite, as well as monazite deportment, recoverability and product-quality assessment.

This is relevant because it may allow the company to assess whether Minta Est can evolve into a separate exploration workstream alongside rutile. The release also noted visual observations of monazite, rutile and zircon in panned concentrates from the Yong and Ayong-Yerap alluvial systems, while explicitly cautioning that visual observations are not a substitute for laboratory analysis. Formal assay results are expected in Q3 2026.

Local Laboratory Capacity Could Accelerate News Flow

Lion Rock stated that its Yaoundé in-country laboratory is nearing the final stages of commissioning and moving toward Competent Person review readiness in Q3 2026. The current focus is on stabilising:

• Sample preparation
• Screening
• Heavy-mineral separation
• XRF and XRD analysis
• QA/QC verification through paired lab analysis

This matters operationally because the company has 6,494 samples in an active assay and data-validation queue. If local processing runs efficiently and review milestones are met, the lab could help convert that backlog into reportable exploration results faster than relying solely on external laboratories.

What Investors May Watch Next

The ASX announcement set out a clear sequence of near-term activities:

The update also noted drilling at neighbouring Minta 1 and Minta Nord, which may add further strike coverage as results are reported.

Investment Relevance: Scale, Grade and Optionality

The Minta update presents an exploration story built around several linked factors. First, Lion Rock is reporting district-scale tenure of 8,800km² with a 130km² rutile corridor already emerging at Mboma and Loum.

Second, the exploration data set is expanding, with nearly 600 mineralogy intervals reported and thousands more samples pending. Third, mineralisation appears shallow and accessible using relatively low-cost auger methods, which is an important economic consideration at this early stage.

There is also a second layer to the story. Minta Est provides exposure to monazite and rare earth elements, while zircon has also been visually identified in some alluvial concentrates. That does not yet establish economic value, but it broadens the technical scope of the project considerably.

The investment case, based on this announcement, is therefore centred on whether Lion Rock can convert early exploration success into continuity, resource definition and product validation. The current results do not answer all of those questions, but they do provide stronger evidence that Mboma and Loum are part of a larger rutile system worth further systematic drilling.

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