Projects
Morogoro Project
The 100% owned Morogoro Project is the Company’s flagship project, prospective for high-grade graphite, and is comprised of approximately 386km2 of granted and application stage exploration ground in Tanzania.
Project location
The project is located 25 km south of the town of Morogoro and ~200km west of the Tanzanian commercial centre of Dar es Salaam, in close proximity to significant existing infrastructure including 30 km from both standard and narrow gauge railway and 30km from the Morogoro to Dar es Salaam sealed road, providing potential for short rail or trucking routes to the deep water port in Dar es Salaam.
Additionally, the Morogoro Project is located ~25 km from access to the Tanzanian national power grid, and around 60 km from the new 2,100MW Julius Nyerere Hydropower Station, which started power generation in February 2024.
Project history
Previous exploration has included digitising the 1:200,000 geological map and ground-truthing the graphitic schist units depicted on the map through geological mapping and trenching in places. The aggregated length of the graphitic schist units was reported to be 60 km. The mapping program identified several new graphitic schist bands and seven prospects, namely Kumba, Kasanga, Kasanga East, Tawa, Nyingwa, Ng’weme and Lundi were identified. No forecast is made of the presence or degree of graphite mineralisation in the figures below (other than the surface grab sample assay results received to date, as detailed below), as it remains subject to exploration and verification.
In October 2022, a total of 21 grab samples were collected by Exceptional Graphite at the Morogoro Project with samples analysed for total graphitic carbon (TGC). All samples returned >5% TGC, with grades ranging from 5.77% to 30% TGC and an average grade of 12.6% TGC, confirming the high-grade nature of the previously mapped mineralisation as well as identifying new mineralised zones.
In addition to surface sampling, eight trenches were excavated at the Kumba and Kasanga prospects in September 2023. The length of these trenches range from 120m to 500m with a total length of 2,502m. Channel samples were collected at 2m intervals along each trench and are now being submitted upon completion of the project acquisition.
Metallurgy
At five locations within the Kumba and Kasanga prospects with strong visual indications of graphite mineralisation, samples were collected in October 2022 for preliminary metallurgical test work, with an initial composite sample returning excellent metallurgical results through a standard grind flotation and cleaner process. Results for the composite sample included a very high assay head grade of 20.3% TGC, excellent recovery of 92.5% and a post flotation purity of 97.4% TGC.
Composite sample metallurgical results – Head grade, recovery, purity of total sample and purity of products
| Sample Number | A000025 | A000026 | A000027 | A000028 | A000029 | |
| Metallurgical sample number | MC | 1 | 2 | 3 | 4 | 5 |
| Flotation sample number | FT3 | FT4 | FT5 | FT6 | FT7 | FT8 |
| Calculated head grade (% TGC) | 20.5% | 16.4% | 16.9% | 36.2% | 13.7% | 19.3% |
| Assay head grade (% TGC) | 20.3% | 16.2% | 16.5% | 35.7% | 13.4% | 19.2% |
| Concentrate recovery | 92.5% | 91.2% | 94.4% | 91.2% | 88.3% | 95.5% |
| Concentrate grade (% TGC) | 97.4% | 96.4% | 98.4% | 97.6% | 95.4% | 98.3% |
These initial outstanding preliminary results highlight the potential for a high grade, high purity graphite concentrate product with very high recoveries while utilising a simple process flowsheet.
Near term exploration priorities
A comprehensive work program has been developed to rapidly progress exploration activities at the Morogoro Project, including field mapping, trenching, drilling, aero and ground geophysical surveys (electromagnetic, induced polarisation and magnetic) as well as metallurgical characterisation of mineralised zones and an environmental baseline survey.
InVert Graphite intends to accelerate exploration with major drill ready targets identified and drill programs now being initiated upon the completion of the acquisition of the project, and having the intent of rapidly assessing whether a maiden Mineral Resource Estimate (reported in accordance with The JORC Code, 2012 Edition) can be delivered for the Project.
Metallurgical test work will be centred upon identifying the geological zones with the optimal mineralisation to potentially produce a high quality product and assess whether it can support the development of a simple, low-cost flow sheet. Additionally, retained samples from existing metallurgical work are able to be processed for downstream test work to determine battery anode material suitability.